Pediatric Trauma

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19 Pediatric Trauma

Introduction

Trauma is the leading cause of pediatric mortality and morbidity in the United States,7 and it is a common reason for admission to a pediatric critical care unit (PCCU). Managing the child with multisystem trauma requires specific knowledge, precise management, and keen attention to detail.1,59 This chapter reviews essential aspects of nursing care of the pediatric trauma victim. Chapters 2, 3, 6, 9 and 11 contain additional helpful information.

Epidemiology and incidence of pediatric trauma

Frequency of Injuries

Although often preventable, injury continues to be the leading cause of death and disability for children older than 1 year.3,17 Nearly 3000 children 0 to 14 years old die every year as the result of injuries—more deaths than all diseases combined.45,47 Leading causes of injury death are falls, motor vehicle crashes, burn injuries, pedestrian injuries, and drowning.45,47 For additional information, see Epidemiology and Incidence of Pediatric Trauma in the Chapter 19 Supplement on the Evolve Website.

Intentional (Inflicted) Versus Unintentional Injuries

Injuries in the child can be categorized as either intentional or unintentional.19 Intentional injuries are inflicted injuries (i.e., child abuse) or injuries that result from neglect (see Intentional Injuries/Inflicted Trauma, later in the chapter). Unintentional injuries, such as many burns, drowning, and traffic-related injuries are often preventable.

Eighty to ninety percent of life-threatening pediatric trauma is blunt injury, resulting from motor vehicle-related causes and falls4,7; approximately half of motor vehicle-related injuries and fatalities are thought to be preventable with the use of age-appropriate safety restraints.27,60 Children can also sustain motor vehicle-related injuries as pedestrians or on bicycles. Although bicycle riding is a common childhood activity, it can be dangerous. The most severe head injuries are sustained when children who are not wearing bicycle helmets collide with motor vehicles.48,50,68 When a child is in a bicycle crash, a helmet will likely decrease the severity of head injuries.27

Role of Nurses and Healthcare Providers in Injury Prevention

Prevention of unintentional injuries requires an understanding of risk factors at each child’s developmental stage, and knowledge of risk-reducing actions.15,46,70 Nurses should use every “teachable moment” with families to increase parental awareness49 of the risk of unintentional injuries and to promote the use of appropriate safety equipment. A teachable moment can occur during encounters such as a well-child checkup or a parent visit to the school,20,35,60 but is probably not present when the child is in the PCCU after an injury occurred. Nurses will need to select the best opportunities and methods to teach injury prevention strategies. See the Chapter 19 Supplement on the Evolve Website, for information about injury prevention.

Physiologic differences affecting manifestation and treatment of injuries

Airway and Ventilation

Larynx and Advanced Airways

The larynx in infants and children is smaller and is more anterior and cephalad than the larynx in adults. Intubation of children is difficult and should not be attempted by inexperienced practitioners (see Chapter 9). Unless the injured child has upper airway injury, edema, or obstruction, bag-mask ventilation usually provides adequate short-term oxygenation and ventilation. However, if the duration of transport is long, continued bag-mask ventilation is suboptimal, and skilled personnel should insert an advanced airway before transport.

The laryngeal mask airway (LMA) is an acceptable advanced airway when used by experienced providers for supporting a comatose patient.16 The LMA can be inserted blindly and, when properly positioned, isolates the trachea and produces less gastric distension than bag-mask ventilation. The LMA cannot be inserted in a patient with a cough or gag reflex.

The correct endotracheal tube size is determined by the size and configuration of the child’s larynx. The vocal cords are the narrowest portion of the adult larynx; in general the proper size of an adult endotracheal tube is the largest that can pass through the vocal cords.

In children younger than approximately 8 years, the narrowest portion of the larynx is in the subglottic area at the level of the cricoid cartilage, a circular cartilage with no membranous portion (C-shaped cartilages are present in the rest of the trachea, with the ends of the C-shaped cartilage connected by membrane). Endotracheal tube size for the child must be evaluated carefully, because a tube can readily pass through a child’s vocal cords but be too large in the subglottic area. If the tube is too large, then it can produce complications such as subglottic stenosis. The tube is likely the proper size if an air leak is present when a positive inflation pressure of 25   cm H2O is provided.

Either cuffed or uncuffed endotracheal tubes may be used in children, and cuffed tubes may be more appropriate if the child’s lung compliance is low (e.g., as following a pulmonary contusion) or if the child has high airway resistance or a large glottic air leak. If a cuffed tube is used, the cuff inflation pressure must be monitored and maintained at the pressure recommended by the manufacturer (typically less than 20-25   cm H2O).9a,38a

Providers can determine approximate airway equipment sizes (including endotracheal tubes) using a color-coded, length-based tape (e.g., a Broselow Pediatric Emergency Tape; Armstrong Medical Industries, Lincolnshire, IL).54 A table containing these approximate sizes is included on the inside back cover of this book.

Chest Wall

The chest wall of infants and children is highly compliant, so rib fractures occur in only approximately one third of children with blunt thoracic trauma.13 The child may sustain significant intrathoracic injuries, yet may not have rib fractures.3 If a rib fracture is present, it suggests that major thoracic trauma has occurred involving substantial force and energy transfer,13 and the trauma team should suspect that underlying organs including the liver, spleen, and lungs may be injured. Upper rib injuries are associated most commonly with pulmonary and major vessel injuries, whereas lower rib fractures typically are associated with liver, spleen, lung, and kidney injury.44

Because the ribs are relatively compliant in young children, the child’s chest should expand outward easily during positive-pressure ventilation. A unilateral reduction in chest expansion during positive pressure ventilation can result from endotracheal tube migration into a mainstem bronchus or from a unilateral pneumothorax, hemothorax, pleural effusion, or atelectasis.

The chest wall of the child is thin, and breath sounds are transmitted easily through the chest wall. When auscultation is performed over an area of atelectasis or fluid accumulation (e.g., a hemothorax), the nurse may note a change in pitch rather than a decrease in the intensity of breath sounds. For this reason, nurses must perform thorough auscultation and compare breath sounds heard over one side and one part of the chest to those heard over the other side and other parts of the chest.

Cardiovascular Function and Circulating Blood Volume

Circulating Blood Volume

Although a child’s circulating blood volume is large per kilogram body weight (80-85   mL/kg in newborns, 75-80   mL/kg in infants, 70-75 mL/kg in children, and 65-70   mL/kg in adolescents and adults), children have a smaller absolute circulating blood volume and cardiac output than adults. Consequently, small amounts of blood loss can produce significant reductions in the child’s circulating blood volume and can compromise systemic perfusion.

A useful way to determine the significance of blood loss in a child is to estimate the child’s total blood volume (TBV) and a 10% blood loss (an amount likely to require transfusion). For example, a 4-kg baby has a TBV of about 320   mL (4   kg × 80   mL/kg), so a 10% blood loss would be 32   mL. A 10-kg infant has a TBV of about 750   mL (10   kg × 75   mL/kg), so a 10% blood loss would be approximately 75   mL. A 30-kg child has a TBV of about 2,250   mL (30   kg × 75   mL/kg), so a 10% blood loss would be approximately 225   mL. A 10% blood loss is approximately 8   mL/kg for infants and 7.5   mL/kg for children. If the child’s weight is unknown, a color-coded Broselow tape will allow estimation of weight. A useful formula for estimating weight in children 1 to 10 years of age is:

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Tachycardia is an early sign of hemorrhage in children. Significant hemorrhage (10%-15% of circulating blood volume) will produce signs of poor systemic perfusion (e.g., mottled color, cool extremities, delayed capillary refill, thready peripheral pulses). Because the child can initially compensate for blood loss by increasing the heart rate and systemic vascular resistance, hypotension often does not develop unless the child acutely loses 20% to 25% or more of circulating blood volume.54

Neurologic Function

The morbidity and mortality of pediatric head injury is lower than the morbidity and mortality of similar head injury in adults. Many children who survive head injury recover completely; however, severe head injury can be fatal or produce long-term disability.

Spinal Cord Injury

Many children with spinal cord injury have ligamentous injury with no evidence of vertebral fracture or other radiographic abnormalities on routine (anteroposterior and lateral) spine radiographs or CT scan.42a These children have spinal cord injury without radiographic abnormality (SCIWORA), and many of these patients develop permanent neurologic injury.3,23

Nurses should carefully assess movement and sensation in all extremities on admission and at frequent intervals throughout the child’s hospitalization (see Chapter 11). The mechanism of injury should increase the index of suspicion of spinal cord injury. For example, a child wearing a lap belt without a shoulder strap who presents with abrasions or contusions on the lower abdomen may have an acute flexion injury of the lower spine (with or without a Chance fracture).

Data from the National Trauma Data Bank51 indicates that 66% of cervical spine injuries in children younger than 3 years are caused by motor vehicle crashes, and only 15% are from falls. In the National Trauma Data Bank, cervical spine injuries were present in approximately 2.3% of all children less than 3 years of age injured in motor vehicle crashes.51 However, cervical spine injuries in children younger than 3 years were still relatively uncommon.51

Fluid Administration

Vascular Access

It may be difficult to establish and maintain vascular access in the child with poor systemic perfusion. If vascular access can be achieved, providers should insert two large-bore venous catheters to enable effective volume administration.

If IV access cannot be achieved, intraosseous (IO) access is established; this route of access can be used for emergency fluid resuscitation and drug administration in patients of all ages.14 IO needles can be placed in the proximal or distal tibia or distal femur. Other placement options include the radius, ulna, pelvis, clavicle, and calcaneus. Medications and drugs can be given intraosseously until suitable venous access is achieved. Fluid may be delivered by infusion pump into an IO catheter, and bolus infusions can be provided through a syringe, an infusion pump, or a pressure bag (inflated up to 300   mm Hg). IO fluid boluses in children may be given as rapidly as 20   mL/kg over 5 min.

Initial stabilization of the pediatric trauma patient

Field Triage and Scoring

Scoring systems have been developed to quantify injury severity and predict patient outcome. These scoring systems also provide objective criteria to determine the need to transfer the trauma victim to a pediatric trauma center. As a result the transport team must select an accepted triage scoring system and use it consistently.

The trauma score (TS) is designed for scoring injury severity in the field; it uses the GCS score and the scoring of four additional physiologic parameters: systolic blood pressure, capillary refill, respiratory rate, and respiratory effort. Each category is scored and then totalled.10

The revised trauma score (RTS) was created to identify patients for triage to a trauma center.11 It requires evaluation of fewer physiologic parameters than the TS. To calculate the RTS, the provider assigns a coded value to the GCS score, the systolic blood pressure, and the respiratory rate and then adds these three values together (Table 19-1). A weighted version of the RTS is a predictor of mortality; an RTS of less than four is correlated with a probability of survival of less than 60%, and should prompt consideration for transfer to a trauma center.2

The pediatric trauma score (PTS) was developed to better identify the manifestations of injuries in children and better quantify their severity. The PTS evaluates the following six parameters: (1) patient size, (2) airway stability, (3) systolic blood pressure, (4) mental status, (5) wounds, and (6) skeletal injuries (Table 19-2).

In the PTS, large size and optimum status result in a score of 2 for each parameter; extremely small size or systemic dysfunction results in a score of −1 for each parameter. The highest possible score is a 12 and the lowest possible score is a −6.67 Children with a PTS totaling 8 or less have the highest potential for preventable mortality and morbidity, and they should be transported to a facility with the resources necessary to provide optimal pediatric care (e.g., a pediatric trauma center).67

The PTS is a conservative scoring system and will result in the triage of some children who have only moderate injuries; however, conservative triage is generally thought to be appropriate for injured children. The PTS has not been shown to be consistently superior to the RTS, so many centers continue to use the RTS for the triage of children and with good results. Because vital signs (e.g., particularly blood pressures) are often not evaluated in the field,22,38 a simple scoring system that uses fewer vital signs (e.g., the RTS) can be used more consistently than one requiring evaluation of heart rate and respiratory rate in addition to blood pressure (i.e., the PTS).

In 2006, the National College of Surgeons Committee on Trauma convened a panel of national experts on trauma field triage to develop consensus trauma triage criteria for adults and children based on physiologic criteria (GCS score, systolic blood pressure, and respiratory rate), anatomy of the injury (e.g., penetrating trauma to the head, neck, or torso; flail chest; two or more long bone fractures; amputation; pelvic fractures; open or depressed skull fractures), the mechanism of injury (e.g., falls of 10 feet [3.048   m], or a distance of more than twice or threefold the child’s height, high risk auto crashes, motor vehicle vs. pedestrian crashes, motorcycle crashes), special patient or system considerations (e.g., children should be preferentially triaged to pediatric trauma centers; patients with associated anticoagulation or bleeding disorders; the EMS provider judges transport is indicated59), and protocols.

The criteria contained in the National College of Surgeons Committee on Trauma guidelines are included in Box 19-1. A detailed explanation of these guidelines was published by the Centers for Disease Control and Prevention in 2009.56 A link to this publication is available in Triage of Injured Patients in the Chapter 19 Supplement on the Evolve Website.

Box 19-1 Indications for Transport of a Pediatric Trauma Victim To A Level I Trauma Center or a Pediatric Critical Care Unit

Modified from PCCC Transport Criteria, Harbor-UCLA Medical Center, Los Angeles, 1990; and Sasser SM, et al: Guidelines for field triage of injured patients: Recommendations of the National Expert Panel on Field Triage. Morbidity and Mortality Weekly Report 2009; 58 (RRO1):1-35.

Management of the pediatric trauma victim in the emergency department

Initial survey, resuscitation, and stabilization

The initial evaluation and stabilization (primary and secondary surveys) of the pediatric trauma victim are performed in the field and then repeated as needed in the ED. By the time the child arrives in the PCCU, the child should have a perfusing rhythm, an advanced airway (with confirmation of correct placement) and vascular access. However, if major trauma is present and the child is extremely unstable, resuscitation may continue in the PCCU.

The admitting critical care unit or the acute care unit admitting team should carefully assess the child to verify that cardiopulmonary function is adequate. In effect, they are performing a tertiary survey, repeating the primary and secondary surveys in a more thorough and methodical manner to ensure that the child is responding to therapy and that no injuries were missed. If the child is deteriorating, resuscitation is provided, and the primary and secondary surveys begin again.

The following information may apply to care in the ED, the acute care unit, or the PCCU. For further information regarding cardiopulmonary resuscitation in children, refer to Chapter 6.

Airway

Spine Stabilization

Spinal cord injuries are less common in children than in adults. When these injuries occur in children, they are generally associated with motor vehicle-related crashes, falls, and inflicted head trauma and can result in injuries of the upper or lower cervical spine (Fig. 19-1).4

Spine stabilization and then immobilization is indicated after motor vehicle crashes, after pedestrian-related crashes, after crashes in which the child was unrestrained, for any unconscious trauma victim (because it is difficult to ascertain the extent of injury), and for any major trauma associated with head injury.2 Manual stabilization is provided initially, and then a device is used to immobilize the cervical spine during transport and initial evaluation (Fig. 19-2).

There are many acceptable methods for immobilizing the cervical spine. A semirigid collar (e.g., an extrication collar) immobilizes the cervical spine, but these collars are not recommended for use in children younger than 4 years.5 Foam collars can be applied easily and are available in small sizes, but they often provide no protection against head and neck movement. If an excessively large collar is applied, flexion of the neck may cause airway obstruction or hyperextension of the neck can result in the very movement and possible injury that the collar is designed to prevent.

Cervical spine immobilization in children requires a combination of a cervical collar (of the appropriate size) with a rigid spine board. The child’s head is supported in a neutral position on the board, using a board with head well or pads under the torso, and, foam blocks and straps. Towel rolls, and tape should be used to secure the torso and the head (see Fig. 19-2).3,25,29

If the mechanism of injury suggests thoracic spine trauma, providers should avoid any flexion or torsion of the torso. If lap belt injuries are suspected (see Secondary Survey, Abdomen), providers should prevent movement of the lumbar spine until further examination.55 The child should be log-rolled whenever turning is required until an injury to the spine is ruled out (i.e., the spine is cleared). If the child is sufficiently stable, the provider should evaluate and document movement and sensation of all extremities.

Airway Management

Oropharyngeal and nasopharyngeal airways can help to maintain a patent upper airway. Oral airways are reserved for the child with absent cough and gag reflex. Oral airways must be sized appropriately, because airways that are too small can push the tongue back into the oropharynx and those that are too long can obstruct the pharynx.54 The length of the airway should equal the distance from the mouth to the angle of the mandible. Nasal airways can be inserted in the alert child or the unresponsive child who has no facial trauma; they may facilitate suctioning.

Intubation

Intubation may be necessary to maintain a patent airway and prevent anticipated deterioration. Indications for intubation of the pediatric trauma victim (Box 19-2) include: (1) inability to ventilate the child’s lungs adequately using a bag-mask device, (2) need for prolonged airway control and prevention of aspiration, (3) severe head injury (in anticipation of a need for controlled ventilation and oxygenation), (4) flail chest, (5) severe facial burns, and (6) shock unresponsive to volume infusion.2,54

When the child has inhalation injuries, trauma to the head and neck, or facial burns, elective intubation is performed in anticipation of the development of progressive airway obstruction. The trauma team should not wait for signs of severe respiratory distress to develop, because the intubation is then likely to be far more difficult.

The nurse must be able to select intubation equipment of appropriate size. Formulas, tables, or a length-based tape that indicates the equipment sizes (i.e., the Broselow tape—see inside back cover) may be used (Table 19-3).54

In the past, only uncuffed tubes were used for children younger than 8 years, because there was concern that cuffed tubes could produce subglottic tracheal injury.2 However, for some children (e.g., those with noncompliant lungs, high airway resistance or large glottic air leak), the use of a cuffed tube may be preferable to an uncuffed tube, particularly if the child requires ventilation with high inspiratory pressure or maintenance of positive end-expiratory pressure.9a,38a Slightly different formulas are used to determine the internal diameter of a cuffed versus an uncuffed tube (see Table 19-3).

Gastric distension increases the risk of vomiting and aspiration, can stimulate a vasovagal reflex and bradycardia, compromises diaphragm movement, and can mimic or mask symptoms of abdominal injury. If gastric distension develops, providers should remove air through an orogastric tube. If the patient has craniofacial trauma with maxillofacial or basilar skull fracture, an orogastric tube is used for gastric decompression rather than a nasogastric tube. Case reports have documented intracranial migration of nasogastric tubes if they are inserted blindly.4,18

Sedation and administration of neuromuscular blockers are advisable before intubation of a conscious trauma victim, particularly if the child is struggling or has a full stomach. Rapid sequence intubation (also known as drug assisted intubation) is designed to reduce stimulation of gag reflex (and the associated risk of vomiting and aspiration) when the child has a full stomach or when the time of the last meal cannot be determined (for further information about rapid sequence intubation, see Chapter 9 and Box 9-11).

Oral intubation is preferred over nasotracheal intubation. Nasotracheal intubation is not performed if cervical spine injury is suspected, because nasotracheal intubation will likely require excessive cervical spine manipulation. In addition, nasotracheal intubation is avoided if the child has maxillofacial injury and a dural tear, because the tracheal tube may be inserted intracranially and produces the added complication of introducing bacteria through the dura.

As soon as the endotracheal tube is inserted, providers should verify correct tube position using both clinical evaluation (including auscultation and visual assessment of chest expansion and monitoring of heart rate and oxyhemoglobin saturation) and a confirmation device (e.g., exhaled CO2 detector, ideally with continuous capnography). If the tube is in the proper position, chest expansion should be visible and equal bilaterally during positive pressure ventilation, and bilateral breath sounds should be equal and adequate. In addition, the child’s oxyhemoglobin saturation (assessed via pulse oximetry) should improve.

Because breath sounds can be transmitted easily through the thin chest wall of the infant or child, as well as into the abdomen, use of a device to confirm tracheal tube placement is particularly important for children. If the child has a perfusing rhythm, an exhaled CO2 detector (a colorimetric device or capnograph) can be used. If, after six positive-pressure breaths, CO2 is detected in exhaled air using a colorimetric device or if a CO2 waveform is documented via capnography, and the clinical exam documents breath sounds and chest expansion, tracheal tube placement is confirmed. If the child has a perfusing rhythm and CO2 is not detected in exhaled air, the tube is not in the trachea; providers should remove it and provide bag-mask ventilation until another tube can be inserted.

Once the clinical and device confirmation have verified tube placement, a chest radiograph ultimately is performed to confirm depth of tube insertion. The chest x-ray cannot, however, confirm tube placement in the trachea.

Breathing

Life-Threatening Thoracic Injuries

Not all thoracic injuries are immediately recognizable, and not all injuries are immediately life threatening. It is important to note that these complications often can be identified on the basis of clinical findings. When thoracic injuries or their complications (e.g., tension pneumothorax, severe hemorrhage) are life threatening and produce typical signs and symptoms, treatment should be initiated before a radiograph is obtained.

Injuries to the lung parenchyma or accumulation of intrathoracic air or fluid can impair oxygenation and ventilation and can produce cardiorespiratory failure. Injuries may be internal, external, or both. Common life-threatening thoracic injuries include tension pneumothorax, open pneumothorax (sucking chest wound), massive hemothorax, and cardiac tamponade. Additional injuries that are potentially life threatening include pneumothorax, tracheobronchial injuries, and pulmonary contusion. Fortunately, injuries resulting from penetrating trauma are relatively uncommon in children.7

Pneumothorax

Pneumothorax is a common complication of thoracic injury in children.13 Most injuries result from blunt chest trauma and are not associated with rib fractures. The child with pneumothorax may be asymptomatic or exhibit dyspnea, chest pain, and severe respiratory distress.44 Symptomatic children demonstrate hypoxemia, asymmetric chest wall movement, and decreased breath sounds or altered pitch of breath sounds on the involved side; this altered pitch may be difficult to identify in the small child because referred breath sounds from other parts of the chest may be heard over the pneumothorax.

Tension Pneumothorax

Tension pneumothorax develops from progressive air entry into the pleural space from the lung or airways; this air accumulation elevates intrapleural pressure, compresses the lung, and can compromise cardiovascular function. The lung on the side of the tension pneumothorax is partially collapsed, and severe hypoxemia develops (Fig. 19-3; see Fig. 10-7). Breath sounds and chest expansion on the side of the pneumothorax are decreased or absent.

A tension pneumothorax shifts the mediastinum away from the affected side. This shift reduces venous return to the heart and decreases cardiac output; neck vein distension may be observed. In addition, the point of maximal impulse and the trachea shift away from the tension pneumothorax,4 although the tracheal shift may be difficult to appreciate in infants and children. The resultant decrease in cardiac output and oxygen delivery are life threatening. The mediastinal shift can result in compression of the contralateral lung, further compromising oxygenation and ventilation.

A tension pneumothorax requires immediate needle decompression followed by tube thoracostomy. Needle decompression should be performed on the basis of clinical examination, and providers should not delay therapy to obtain a chest radiograph. A simple pneumothorax is treated with chest tube insertion.

To perform needle decompression, insert a large-bore (13, 16, or 18 gauge) angiocatheter on the affected side, into the second intercostal space at the midclavicular line.54 The diagnosis of tension pneumothorax is confirmed when needle or tube thoracostomy results in evidence of air evacuation and immediate improvement in the patient’s condition. After initial air evacuation, the provider can use a stopcock to prevent entrainment of air into the chest. The provider can also attach the angiocatheter to tubing with the tubing tip placed 2 to 3   cm below the surface of a bottle of sterile water; this maintains an underwater seal until a chest tube is inserted.

Chest tubes are inserted to treat pneumothorax and hemothorax. Appropriate chest tube size is based on the age of the child (Table 19-4), and sizes can be predicted from length-based (e.g., Broselow) resuscitation tapes. Before the chest tube is inserted, the skin is prepared with a povidone iodine or chlorhexidine scrub, and the provider administers local anesthetic (e.g., lidocaine). A small stab wound is made in the skin and subcutaneous tissue along the long axis of the rib, in the fifth or sixth intercostal space at the midaxillary line. A curved hemostat followed by the chest tube is advanced through the chest wall and pleura, into the chest cavity (see Evolve Fig. 19-1 in the Chapter 19 Supplement on the Evolve Website for an illustration of chest tube insertion).

Table 19-4 Pediatric Chest Tube Sizes

Age Chest Tube Size (French)
Full-term neonate (6 months) 10-12
Older infant (6-18 months) 12-14
Toddler (1-3 years) 14-16
Young school age (4-7 years) 16-20
Older school age (8-12 years) 20-24
Adolescent 24-32

Cardiac Tamponade

Cardiac tamponade results from the accumulation of a significant amount of blood in the pericardial sac. Tamponade develops when sufficient blood or fluid (as little as 25-50   mL) accumulates to compress the heart and compromise both venous return to the heart and cardiac output.

Cardiac tamponade is a form of obstructive shock. Classic clinical signs include persistent hypotension, distension of neck veins, muffled heart sounds, and pulsus paradoxus (a fall in systolic arterial pressure of 8-10   mm Hg or more during spontaneous inspiration). However, these signs are virtually impossible to appreciate in patient with tachypnea and hypotension. The presence of a cardiac tamponade can be confirmed by echocardiography and, more recently, with the use of ultrasonography (e.g., emergency ultrasound or focused assessment with sonography for trauma [FAST]); fluid in the pericardium (i.e., hemopericardium) will appear black against the gray heart muscle.42

When tamponade is present, the tamponade must be evacuated by pericardiocentesis. Administration of autologous blood and fluid boluses may initially help support cardiac output. A pericardial drain can be placed or an emergency thoracotomy can be performed for pericardial decompression and immediate repair of the associated cardiac injury.4,13

To perform pericardiocentesis, the chest is cleaned and a needle is inserted in the left subxyphoid region. While constant negative pressure is applied, the needle is aimed superiorly and posteriorly. Once blood or fluid enters the barrel of the syringe, the needle is likely in the pericardium. At this point, the needle or catheter is held in place and blood is aspirated to decompress the pericardium.4

If neither a FAST scan nor ultrasonography is available, pericardiocentesis may be accomplished using an 18-gauge metal spinal needle joined to an alligator clamp (i.e., the alligator clamp is joined to the base of the needle) to allow simultaneous needle insertion and monitoring of the electrocardiogram (ECG). The alligator clamp is then joined to the electrode of an ECG recorder (see Evolve Fig. 19-2 in the Chapter 19 Supplement on the Evolve Website for an illustration of this technique).

Pulmonary Contusion

A pulmonary contusion is a bruise on the lung resulting from lung parenchymal injury. Although a pulmonary contusion can be asymptomatic and diagnosed only on CT scan, it can cause respiratory compromise following major blunt chest trauma.13,44 A significant pulmonary contusion will cause hypoxemia, and opacification is visible on a chest radiograph or CT scan (see Figs. 19-3, B and 19-4).

An associated hemothorax typically suggests the presence of a more severe lung injury. Treatment includes supplementary oxygen and may require positive-pressure ventilation with oxygen support and positive end-expiratory pressure.

Circulation

Assessment and support of circulation includes: (1) assessment of systemic perfusion, including assessment for signs of hemorrhage; (2) control of external bleeding; and (3) treatment of hypovolemia and any other causes of inadequate systemic perfusion. The nurse should monitor the child’s heart rate and assess systemic perfusion frequently.

Cardiovascular compromise in the trauma patient generally is caused by hypovolemia, but it may also be caused by hypoxia or severe head injury. Even if effective cardiovascular function is present on arrival in the hospital, the trauma team should assess and reassess systemic perfusion to detect any signs of deterioration. These signs may be subtle in the child and include: tachycardia; weak peripheral pulses, mottled skin; cool, pale extremities; delayed capillary refill; and unusual irritability or lethargy (Box 19-4).

If the child has an ineffective or absent pulse in a central artery (e.g., carotid, femoral), or the infant has no brachial pulse, cardiopulmonary resuscitation is needed (see Chapter 6). Additional indications for the initiation of chest compressions include symptomatic bradycardia (a heart rate less than 60/min associated with signs of poor systemic perfusion) that is unresponsive to adequate oxygenation and ventilation.26,54

The most common terminal (prearrest) cardiac rhythm in pediatric patients is a bradycardia that deteriorates to an agonal rhythm or asystole. Ventricular tachycardia and ventricular fibrillation are less common in children than in adults. For further information regarding cardiopulmonary resuscitation in children, see Chapter 6. Survival following prehospital cardiac arrest and cardiovascular collapse in pediatric victims of blunt trauma is poor.26 To prevent arrest, providers must detect and treat signs of airway compromise, respiratory failure, and shock.

Recognition of Hypovolemia

As blood volume is depleted, the child’s blood pressure initially remains unchanged, because systemic vascular resistance increases proportionately.54 The pediatric trauma victim typically does not develop hypotension until approximately 30% of blood volume has been lost.2,13,25,54 This ability to compensate for blood loss with vasoconstriction and redistribution of blood flow means that signs of hemorrhage may be insidious in the child and vital signs alone may not identify evolving shock.2

The most consistent signs of hemorrhage will include tachycardia, alteration in responsiveness, peripheral vasoconstriction, thready pulses, and diminished pulse pressure.4,54 Hypotension is a late and ominous sign of cardiovascular compromise.54 Clinical findings can be used to classify the severity of the hemorrhage and to estimate the volume of blood loss (Table 19-5).

Initial blood pressure measurement is useful in identifying frank hypotension, and it is used as a baseline for identifying trends in the patient’s condition. Accurate blood pressure measurements require the use of an appropriately sized cuff (with a non-invasive measurement system) or an intraarterial catheter joined to a properly zeroed, leveled, and calibrated fluid-filled monitoring system. Intraarterial monitoring should be established early when severe trauma is present, because it provides access for blood gas and other blood sampling and enables continuous evaluation of the patient’s blood pressure and response to therapy.

Noninvasive oscillometric blood pressure measurements may provide falsely high blood pressure measurements in the hypotensive patient.38a Such measurements are less reliable than intraarterial measurements in an unstable child.

Vascular Access

Vascular access can be obtained through percutaneous peripheral venous cannulation, percutaneous central venous (e.g., the femoral, external jugular, internal jugular, or subclavian vein) access, the IO route, or venous cutdown. Any of these routes will provide effective vascular access for fluid, blood, and drug administration.

It is often difficult to establish IV access in the small child, particularly if hypovolemia and poor systemic perfusion are present. If providers are unable to establish peripheral vascular access and the child is in shock, they should establish IO access. If a catheter with a small-bore lumen is in place, that catheter is used for fluid administration while attempts are made to insert a second catheter. Inserting one large-bore venous catheter may be acceptable initially if the child does not have hemorrhage or shock; however, insertion of two large-bore catheters is optimal. Note the child’s response to insertion of an IV catheter as part of the evaluation of the child’s neurologic function.

IO access is a suitable alternative to rapid peripheral venous cannulation for administration of crystalloid, colloid, blood, and drugs for the child in shock. IO needles provide access to the marrow cavity of a long bone in an uninjured extremity and are safe and effective, and they require less time to establish than venous cut downs.3,9a,38a,54,61 Drugs administered by the IO route reach the heart in approximately the same time as drugs given by central venous access.

IO access can be established in the anterior tibia 1 to 3   cm below the tibial tuberosity54 or in the inferior third of the femur, 3   cm above the external condyle, anterior to the midline.3 Bone marrow needles are preferred for this procedure. Occasionally, marrow will obstruct the flow of fluids through the needle, and the use of a pressure infusion device may be required to increase the rate of fluid administration.54

Central venous cannulation enables rapid fluid administration and assessment and continuous monitoring of central venous pressure. However, central venous cannulation should be performed only by personnel trained in these procedures. Ultrasound guidance may be helpful.42

The jugular approach to the superior vena cava may be difficult to achieve in the small child during bag-mask ventilation or resuscitation, or when spinal injury is suspected. However, the subclavian or supraclavicular route may introduce complications such as pneumothorax and subclavian artery puncture.

The femoral vein can be used to gain access to the inferior vena cava. The advantage of the femoral vein approach is the distance from the major sites of activity during resuscitative efforts; however, some physicians prefer to cannulate other smaller vessels.54

Treatment of Hypovolemia

Fluid resuscitation begins with a bolus of isotonic crystalloid solution (lactated Ringer’s solution or normal saline) administered in boluses of 20   mL/kg over 5 to 20 minutes.2,54 If the child has signs of substantial blood loss or shock, the bolus should be administered as quickly as possible, typically over 5 to 10 minutes. The patient with trauma and hemorrhage also will require blood administration. Typically one bolus of packed red blood cells (RBCs) is administered after every two to three boluses of isotonic crystalloid (Fig. 19-5).

Boluses (10-20   mL/kg) of type O, Rh-negative packed RBCs can be administered when type-specific blood is not available; type-specific whole blood can be administered if packed RBCs are not available. Rh-negative blood is typically reserved for young females and females of reproductive age, to reduce the incidence of Rh sensitization. Rh-positive blood can be used in prepubescent females if there is no alternative, although this predisposes them to developing antibodies that can complicate future pregnancies. Either Rh-positive or Rh-negative blood may be administered to males.

Both isotonic crystalloids and colloids are used for intravascular volume resuscitation, and a larger quantity of fluid will be administered than the estimated volume lost. As a result of the distribution and effects of IV crystalloids and colloids, usually a crystalloid-to-colloid ratio of 3:1 is administered to produce the same effects (the “3 to 1 rule”). Although both crystalloids and colloids are ultimately distributed throughout the extracellular space, colloids remain in the vascular space for a longer period of time and may enable restoration of circulating blood volume with fewer boluses. However, there is no evidence that colloids are superior to crystalloids for volume resuscitation.

If the blood pressure, capillary refill, and quality of peripheral pulses remain poor and tachycardia persists despite the administration of two or three fluid boluses, then substantial hemorrhage has likely occurred or a continuing source of blood loss is present.31 Surgical exploration should be considered if the child’s condition is still unstable despite administration of two boluses of packed RBCs (in addition to the isotonic crystalloids). Abdominal bleeding can result from a solid organ or major vessel injury, and the trauma team should look for occult retroperitoneal or pelvic bleeding.13 Additional causes of shock that is unresponsive to initial fluid resuscitation include cardiac tamponade, tension pneumothorax (discussed previously), and neurogenic shock.

Disability: Neurologic Function

Rapid neurologic evaluation is an essential component of the primary survey of the injured child. The initial neurologic examination consists of an assessment of pupil size and response to light, evaluation of responsiveness (GCS score or modified GCS score) and voluntary movement and sensation, and (in the infant) palpation of the fontanelle.

Signs of increased intracranial pressure include: deterioration in level of consciousness, pupil dilation (unilateral or bilateral), lack of response to a central painful stimulus, and, in the infant, a firm fontanelle. Late signs of increased intracranial pressure (often associated with impending brainstem herniation) include bradycardia, systolic hypertension with widening pulse pressure, and altered respiratory pattern, such as apnea (see Box 19-5).

Effective cerebral resuscitation in the pediatric trauma victim requires adequate shock resuscitation; cerebral perfusion will not be optimal if shock is present. The trauma team should provide shock resuscitation until systemic perfusion is effective. If signs of impending herniation develop (i.e., bradycardia, systolic hypertension, and altered respiratory pattern), it may be helpful to provide mild hyperventilation to reduce carbon dioxide levels and, thus, cerebral blood flow as a temporary emergency measure. Hyperventilation is not routinely performed unless signs of impending herniation are present. IV mannitol (0.25-0.5   g/kg) is given to shift water from the cellular to the extracellular (including intravascular) space; this rapidly decreases blood viscosity, leading to an increase in cerebral blood flow and tissue oxygen delivery. Hypertonic saline (3%-23.5%) may also be administered to produce an osmotic diuresis and improve cerebral perfusion; it may have other additional benefits. For further information, see Management of Increased Intracranial Pressure in Chapter 11.

Status epilepticus is uncommon, but must be identified and treated aggressively in the patient with increased intracranial pressure, because continuous seizures will increase cerebral metabolic oxygen consumption and will cause cerebral ischemia. Intermittent seizures will increase intracranial pressure transiently and are treated with diazepam (0.25   mg/kg).2 A prophylactic anticonvulsant (i.e., phenytoin) is typically administered for 1 week to infants and children with moderate or severe head injury (GCS less than 12) who are thought to be at high risk for seizures.

Infants rarely lose a significant percentage of blood volume from intracranial hemorrhage, but bleeding from scalp wounds in infants or children can result in significant blood loss. After initial resuscitative efforts and treatment of the scalp wounds, persistent signs of shock are likely explained by other causes.

Secondary Survey: “head-to-toe” assessment

The secondary assessment begins as soon as all aspects of the primary survey and resuscitation have been completed. The first goal of the secondary survey is evaluation of the patient response to the initial resuscitative effort; this requires frequent assessment of systemic perfusion. If the child fails to respond to volume resuscitation or deteriorates after the initial response, additional injuries may be present or surgical exploration may be needed.

Another goal of the secondary assessment is to perform a systematic evaluation of each area of the body. This head-to-toe assessment is designed to identify hidden injuries or injuries that were not detected during the primary assessment.

Head

The most common head injury in children is closed head injury.58 Closed head trauma is not always immediately recognizable. For this reason, the mechanism of injury and the initial response to therapy (or lack of response) should provide a high index of suspicion. The first priority of management is to maintain cerebral perfusion and treat increased intracranial pressure by performing intubation and providing adequate ventilation, oxygenation, shock resuscitation, osmotic diuresis, and analgesia and sedation if needed. Early identification of increased intracranial pressure is essential to reduce morbidity and mortality.

It is important to palpate the entire head carefully to identify fractures or wounds. In addition, the nose and ears are examined carefully for blood or cerebrospinal fluid drainage, which is indicative of maxillofacial fracture or basilar skull fracture with dural tear. If clear fluid drains from the nose or the ears, it should be tested for the presence of glucose; the presence of glucose suggests that the fluid is cerebrospinal fluid. An ocular examination should be performed to identify papilledema or lateralizing extraocular muscle paresis or eye injury.

Providers should evaluate cranial nerve function when possible and immediately report any absence of cranial nerve function to the trauma surgeon or the trauma team leader. The nurse can often correlate patient neurologic function with the site of central nervous system injury through careful assessment of signs of cranial nerve function and evaluation of any abnormal posturing or respiratory patterns (Table 19-6).

A CT scan will provide important information about the extent and severity of the head injury and potential causes of further deterioration, such as intraparenchymal, subdural, or epidural hemorrhage (Fig. 19-6). In addition, it will provide information about the need for surgical intervention. If a CT scan is performed to evaluate a head injury, the scan should include the upper cervical spine.23 Magnetic resonance imaging (MRI) has been used more often in recent years because it provides better detail of head injuries and may be more useful to predict outcome (see the following discussion under Neck and Spine).24

Brain injury causes the release of biomarkers that can be measured in the blood, cerebral spinal fluid, and extracellular brain fluid. These biomarkers include inflammatory mediators (e.g., interleukins, tumor necrosis factor), nerve growth factor, and adhesion molecules to proteins. Monitoring levels of biomarkers may be useful in evaluating the severity of brain injury and response to therapy and in predicting outcome.6,24

The trauma team and especially the bedside nurse should frequently assess the patient’s mental status. The use of a standardized scoring system will enable quantification of the patient’s progress and responsiveness and trends in the patient’s condition. The GCS or the modified (pediatric) GCS36 will be helpful (Table 19-7). Frequent assessments are needed to detect subtle signs of deterioration.

Occasionally children with diffuse cerebral injury will demonstrate sudden deterioration several hours after injury; such deterioration must be immediately detected and treated. For further information regarding the assessment and management of the child with head injury and increased intracranial pressure, see Chapter 11.

If spine trauma is suspected, hypotension persists, and hypovolemia and pericardial tamponade have been ruled out, then neurogenic shock may be present. Neurogenic shock results from a spinal cord injury that produces loss of autonomic (sympathetic nervous system) tone and results in vasodilation and hypotension (see below).25

The most consistent indicators of poor prognosis following closed head injury in children include flaccid paralysis and fixed, dilated pupils despite the restoration of satisfactory perfusion. Other poor prognostic indicators include the development of diabetes insipidus at or soon after admission (often indicates cessation of pituitary function), cardiovascular instability unrelated to hemorrhage, and disseminated intravascular coagulation. Brain injury results in the release of fibrinogen; severe head injury can result in substantial fibrinogen release and disseminated intravascular coagulation.3 Concentrations of some combinations of biomarkers of brain injury may predict poor outcome from head trauma, although research in this area continues to evolve.6,24

If a devastating neurologic injury is present and brain death is diagnosed or imminent, the family should be asked about organ donation. The request should be made in accordance with local protocols, which can vary by jurisdiction. For further information, see Brain Death in Chapter 11; see also Chapter 3.

Neck and Spine

If the child has a mechanism of injury that is likely to cause spine injury or if the child has head or neck trauma, then providers should immobilize the cervical and thoracic spine as a precautionary measure. Once the child’s condition has been stabilized, further evaluation is warranted to determine whether spinal cord injury can be ruled out.

If the child has a mechanism of injury that is consistent with possible spinal cord injury, has neurologic signs of spinal cord injury, or is comatose or hypotensive without neurologic signs, then the extrication collar should remain in place until spinal cord injury is ruled out; this requires a combination of clinical assessment, cervical spine radiographs, CT scan, and possibly an MRI (Fig. 19-7).23

It is difficult to rule out cervical spinal cord injury solely on the basis of anteroposterior and lateral radiographs and CT scans, because many children experience spinal cord injuries that are not associated with abnormalities in standard radiographs and CT scans.3,23,42a Historically, a complete radiographic cervical spine series includes anteroposterior and lateral cervical spine radiographs and oblique and odontoid views.32,69

In adults, the CT scan has largely replaced radiographs for evaluation of the cervical spine, particularly in obtunded patients,33 but similar comparison data have not been published for children.23 Cervical spine subluxation or vertebral fracture can be identified with CT scan, and the combination of spine radiographs and limited CT scan of the occiput to the third cervical spine can increase identification of cervical spine injuries in obtunded or young children.21,23

In many centers, a screening trauma CT scan (“traumagram”) can be performed in less than 10 minutes. This screening scan consists of a CT of the head, neck, chest, abdomen, and pelvis using a rapid scanner that requires no repositioning of the child or transport to different rooms in the radiology department. MRI also can be helpful, but is not feasible in the evaluation of the patient in an unstable condition; it will be performed if clinical findings suggest the presence of a cervical spine injury.

If the child is awake and oriented, the presence of neck or back pain is suggestive of vertebral injury.23,69 The National Emergency X-Radiography Utilization Study Group developed a decision instrument of clinical criteria to rule out cervical spine injuries in patients with blunt trauma (Box 19-6)32 that performed well in a multicenter trial involving more than 3000 children. However, the study authors recommended caution in interpreting the results because there were fewer than 90 infants and toddlers in the study.69

At some trauma centers, the extrication collar is left in place until the child is sufficiently awake to respond when providers check for tenderness during movement. If the child remains comatose for a long time, the cervical spine is screened using an MRI, and the collar is removed if the MRI is interpreted as normal. The child with no tenderness plus a normal MRI or a normal neurologic examination is unlikely to have a cervical spine injury and so is unlikely to produce a secondary injury with spontaneous movement.

If clinical findings or the mechanism of injury suggest the likelihood of a lower spine injury, then thoracic, lumbar, and sacral spinal films and CT scan are indicated. Lap belt bruising should raise the possibility of a Chance fracture, caused by flexion against the lap belt with resultant distraction injury to the lumbar spine (see Abdomen, below).

Chest

As noted previously, children have softer, more compliant rib cages than do adults. Therefore rib fractures are relatively uncommon, occurring in one third or less of children with blunt trauma. Severe intrathoracic injury may be present despite the absence of rib or sternal fractures or other manifestations of abnormality on external examination.3,13 However, thorough chest inspection and palpation should reveal obvious signs of injury. The nurse may note chest asymmetry associated with respiratory effort or caused by rib fractures. Careful auscultation should identify localized alteration in the intensity or pitch of breath sounds; pulmonary edema may cause crackles and hypoxemia.

Chest radiographs, including anteroposterior and lateral films, should be performed on any child with severe injury to the chest or torso.13 CT scans may provide additional information and detail, particularly to evaluate airway abnormalities and fluid collections. A pulmonary contusion will produce localized opacification of the lung (see Fig. 19-4) and increased density on the CT scan.

Although rare, cardiac contusions may be present in any child with a history of blunt thoracic trauma. Clinical signs include chest pain, arrhythmias, and myocardial dysfunction. The child may have a new murmur or evidence of congestive heart failure, including systemic and pulmonary edema and a gallop rhythm. The diagnosis is made by evaluating cardiac isoenzymes, a 12-lead ECG, and an echocardiogram.4

The cardiac troponin complex consists of three troponins (C, I, and T) that are involved in the interaction of the actin and myosin filaments in cardiac muscle.37 These troponins are normally present only in cardiac muscle, and their levels will rise with cardiac necrosis (death of heart muscle) and myocardial injury. In adults, concentrations of troponins I and T are monitored to determine the presence of an acute coronary syndrome; elevation of troponins I and T can be more sensitive indicators of myocardial injury than elevation of the creatinine kinase myocardial band (CK-MB).37 Although troponin concentrations are normally negligible in children, they are often elevated after cardiac contusion. It is important to note that not all children with cardiac contusion demonstrate elevation of troponins, and troponins may be elevated by conditions other than cardiac contusions.30

ECG signs of a cardiac contusion may include atrial or ventricular arrhythmias (uncommon) or S-T segment depression or elevation, which may be confused with myocardial ischemia. The echocardiogram may detect abnormalities of contraction and wall motion.

Treatment of cardiac contusion is primarily supportive and includes careful fluid titration to optimize cardiac preload, support of myocardial function with inotropes (e.g., dobutamine), and manipulation of afterload (e.g., using vasodilators or vasopressors). Providers should be alert for the sudden development of arrhythmias such as ventricular tachycardia or fibrillation, and they should be prepared to treat them.

Abdomen

Hemorrhage from thoracoabdominal injuries is a leading cause of traumatic death in pediatric victims, as are head injury and complications of airway and ventilation.4,54a Children do not often have penetrating abdominal injuries; blunt abdominal trauma accounts for the vast majority of pediatric abdominal injuries.

Providers should examine the child carefully to identify both overt and subtle signs of intraabdominal injuries. Fifteen percent of injured children with negative abdominal examinations are subsequently found to have significant intraabdominal injuries, even in the presence of normal mental status and vital signs.4,13

Signs of abdominal hemorrhage are difficult to detect in the comatose patient or one with spinal cord injury and loss of abdominal sensation. In these patients, additional evaluation and diagnostic studies are needed. Emergency ultrasound and FAST are now the diagnostic tools of choice for unstable (particularly those who are obtunded) patients, because they can be performed at the bedside as often as necessary, without radiation exposure or the need to transport the patient. With these devices, free fluid or blood (i.e., hemoperitoneum) appears black against the gray of organs.42 FAST scans have a higher specificity (i.e., when fluid is observed, the child has intraabdominal bleeding) than sensitivity (i.e., children can have organ injury without detection of free fluid or blood in the abdomen). Therefore FAST is often used in conjunction with the CT scan to detect intraabdominal bleeding in children with trauma and hypotension.42

A CT scan will usually reveal the presence of significant injury (see below). As noted above, a screening trauma CT scan can be performed in many medical centers in less than 10 min. The CT series includes scans of the head, neck, chest, abdomen, and pelvis using a rapid scanner that requires no repositioning of the child or transport to different rooms in the radiology department. Peritoneal lavage is rarely used in children because it is not as accurate as the use of FAST or a CT scan. In addition, it will create a painful site that complicates later assessment of abdominal tenderness.4

Injuries resulting from improperly positioned lap belts frequently produce abdominal ecchymosis and bruising (Fig. 19-8). If the lap belt was positioned across the lower abdomen and not over the pelvis, the bruising may indicate the possibility of intestinal and lumbar spine injury (Fig. 19-9).55,66

Any visible bruising on the abdomen should raise the suspicion of an intraabdominal injury.43 The bruise itself makes it more difficult to examine the conscious child, because the bruise will cause abdominal wall tenderness that is difficult to distinguish from tenderness associated with intraabdominal injury. Pain itself may be difficult to evaluate. The severity of pain does not necessarily correlate with the severity of abdominal injury.

Progressive abdominal distension is one of the first signs of major abdominal injury, so measurement of the abdominal girth, especially in infants and young children, may be helpful. Pain and abdominal distension will reduce the child’s effective tidal volume and ventilation, altering the child’s respiratory rate, respiratory effort, and chest expansion (Box 19-7). Unilateral splinting of respirations with or without evidence of rib fracture is an indication for liver and spleen scans.58 Additional high-risk variables, in addition to abdominal tenderness and systolic hypotension, found to be sensitive for radiographically confirmed intraabdominal injury in children after blunt torso trauma include: femur fracture, elevated liver enzymes, microscopic hematuria, and an initial hematocrit less than 30% (see Box 19-7); however, these variables were not specific for intraabdominal injury.34

Signs of splenic or hepatic injury include tachycardia, hypotension, and abdominal tenderness. The splenic injury will be apparent on a CT scan (Fig. 19-10). Splenic injury can cause a positive Kehr’s sign (referred pain to the left shoulder during compression of the left upper quadrant) and leukocytosis.13

Hepatic trauma (Fig. 19-11) can cause referred right shoulder pain instead of Kehr’s sign or left shoulder pain.13 Most significant hepatic injury will result in elevation of the serum transaminases (aspartate aminotransferase greater than 200 International Units/L and alanine aminotransferase greater than 125 International Units/L).28

Further evaluation for abdominal injury includes a thorough rectal examination to rule out the presence of blood within the rectum, to assess sphincter tone, and to ensure that there has been no disruption of the lower urinary tract. Absence of sphincter tone can indicate spinal cord injury.

The pediatric patient with a history of blunt trauma requires close observation. The nurse should obtain frequent vital signs and must be able to recognize signs of pain and subtle signs of deterioration in systemic perfusion. If the patient’s condition is unstable, continuous nursing care and medical supervision is necessary during all phases of transport and testing. Notify the physician or other on-call provider immediately if the patient’s condition deteriorates. Appropriate resuscitation equipment should always be readily available. Occasionally, a follow-up CT scan is useful if the initial scan is not diagnostic and the child is not improving (e.g., the child may have intestinal injury).

Conservative management of splenic, hepatic, or renal contusions and lacerations includes supportive care and close observation in a PCCU. Typically, bleeding from such lacerations has ceased by the time the child arrives at the hospital, and these organs often will heal without intervention.4 If conservative management is provided, the child’s systemic perfusion must be monitored closely.

Surgical intervention is required in the presence of ongoing hemorrhage, hemodynamic instability (including the need for excessive fluid administration to maintain blood pressure and perfusion), hollow viscous perforation, or catastrophic organ injury.31 In hemodynamically stable patients, surgical exploration can be accomplished through laprascopy.64

When surgical intervention is required, the injured organ is often repaired rather than removed (see Evolve Fig. 19-3, A and B in the Chapter 19 Supplement on the Evolve Website for color surgical photographs of splenic injury and lap belt injury to the intestine). Removal of the injured spleen, liver lobe, or kidney usually is required only for devastating injury or if the organ is separated from its vascular supply.

Genitourinary Trauma

Genitourinary trauma is seldom life threatening. However, injured children are more prone to renal injuries than injured adults, because the kidneys are less well protected by muscle, ribs, and fat. Hematuria, abdominal pain, and flank hematomas are all signs of renal injury.13 The presence of threadlike clots in the urethra is a pathognomonic finding indicative of renal injury, and the amount of hematuria correlates well with the severity of renal trauma.62

Although insertion of a urinary catheter is routine during trauma resuscitation, a catheter should not be inserted in the trauma victim if frank blood is observed in the urinary meatus. Such blood often is caused by urethral disruption and is a contraindication to urinary catheter insertion.41 The presence of blood in the urinary meatus indicates the need for a retrograde urethrogram and urologic consultation.8a Severe renal injury with separation of the kidney from the urethra may not be associated with hematuria; these patients will demonstrate evidence of extravasation of urine that will be detected by a CT scan.

Bladder rupture should be suspected if any degree of hematuria is detected in the child with a pelvic fracture. A cystogram is indicated to rule out bladder injury.8a

Extremities

Extremities should be observed for tenderness, deformity, swelling, pallor, coolness, and decreased peripheral pulses. Subtle fractures can be missed during initial resuscitative management, but they should be detected during the secondary survey.

Long bone fractures and pelvic fractures can produce significant blood loss, especially in older children. When a pelvic fracture is suspected, the trauma team should assess the integrity of other structures within the pelvis, including the urethra, bladder, and pelvic vessels. Disruption of pelvic vessels can cause rapid and severe blood loss.4

Compartment Syndrome

Compartment syndrome occurs when external forces compress an area of muscle, or when bleeding or edema increase pressure within the compartment that is created by sheaths of fascia surrounding the muscle bundle and related nerves and vessels. As the pressure within the compartment rises, vascular supply to the muscle and tissue is compromised and ischemic and nerve damage may develop.52

Although compartment syndrome is uncommon in children, it may complicate any skeletomuscular injury; the tissues most often involved following trauma are the lower legs and the forearms. Compartment syndrome may also develop following a burn injury.

Signs of compartment syndrome include pain that worsens with movement, edema, altered movement and sensation, and decreased perfusion (cooling of the extremity with decreased intensity of the pulses); these can be recalled by considering the “five P’s”: pain, pallor, pulselessness, paresthesia, and paralysis.4,52 A sixth P can be added—puffiness.63 Specific clinical findings associated with involvement of the major compartments are listed in Table 19-8. A physician or other on-call provider should be notified immediately if signs of compartment syndrome develop, because urgent surgical intervention may be needed.

Bedside Doppler ultrasound examination can be used to evaluate blood flow. If the pressure in the compartment is measured, a pressure exceeding 40   cm H2O is considered an indication for surgical intervention (i.e., fasciotomy), but normal pressures and pressure thresholds are not well established in children.60

Treatment of compartment syndrome requires surgical release of the restriction surrounding the muscle. A fasciotomy is performed and the area is left open, but covered with a sterile dressing, and may require later skin grafting (see, also, Chapter 20).52

Skin

During initial stabilization of the trauma victim, visibility of some areas of skin will be compromised by pressure dressings. Once the primary survey and stabilization have been accomplished, the undressed pediatric patient should be examined carefully for the presence of other injuries, including contusions and burns. If burns are present, the trauma team should plan fluid resuscitation based on the estimated burn depth and extent. For information about burns, refer to Chapter 20.

Most fire-related deaths result from smoke inhalation, and the most common cause of death during the first hour after burn injury is respiratory failure.2 A history of closed space confinement should lead to evaluation for the presence of carbon monoxide poisoning. The child should be inspected for (1) singed eyebrows and nose hair, (2) dark sputum, (3) carbon deposits and inflammatory changes in the mouth, (4) cyanosis and dyspnea, and (5) altered level of consciousness. Initial treatment includes oxygen administration and close observation for deteriorating respiratory status. Note that carboxyhemoglobin is not detected by a pulse oximeter, so pulse oximetry will be falsely high in the presence of carbon monoxide poisoning (see Pulmonary Injuries in Chapter 20).

Intentional injuries/inflicted trauma

Characteristics of Injuries Suggestive of Intentional Injury

Implausible injuries are those that are inconsistent with the history. For example, if a child allegedly sustained multiple bruises when falling down the stairs, bruises will most likely be located over bony prominences; bruises will rarely appear over soft tissues. If a head injury occurs when the child falls out of bed, usually a single lump is present, and the skull is not fractured. Although small linear skull fractures may occur with minor falls, loss of consciousness and multiple bruises are inconsistent with a simple fall.57

Suspicious bruises are located on the buttocks, inside of the child’s legs, over the cheeks or flanks, near the upper lip or inside of the mouth, and around the neck. Any bruises or lacerations near the genitals should be examined carefully and investigated. Bilateral black eyes, retinal hemorrhages, detached retina, and traumatic cataracts usually are inflicted injuries.

The marks of injury can be characteristic of the method or instrument of injury. Human hand marks often can be identified, and bite marks can be used to confirm the identity of the abuser. Marks from belt buckles or hair brushes may be identifiable.

Inflicted burns may be splash burns, hot water immersion burns, or branding. Inflicted splash burns may be difficult to distinguish from unintentional burns. Hot water immersion burns usually have circumscribed borders. If the hands or feet are immersed, the burns may resemble the areas covered by gloves or socks, respectively. If the child’s buttocks are dunked in the water, a characteristic V burn will be associated with the water level on the back and thighs. Irregular margins consistent with splashing or movement by the child will be notably absent, indicating that the child was held in the water. Branding burns usually will reflect the shape of the hot object, which may include a pan, a hot radiator, a cigarette tip, or a cigarette lighter.

Subdural hematomas are among the most common results of inflicted head injury in children. Many subdural hematomas are associated with skull fracture, and some may be associated with retinal hemorrhage (the shaken baby syndrome). Scalp bruises and traumatic alopecia also may be observed in these victims.57

Inflicted head trauma12 (formerly called shaken baby syndrome) is the term used to encompass the spectrum of inflicted head injuries, including associated cerebral, spinal, and cranial injuries and their complications. The trauma can result from the combination of vigorous shaking of the child associated with the application of force (e.g., the child is shaken and struck or is shaken while being held against a mattress in bed). However, injuries can also result from blunt head trauma and may be associated with spinal cord injury or hypoxia.12 These injuries include the primary injury as well as secondary injuries such as hypoxia, ischemia, increased intracranial pressure, and long-term complications including seizures, developmental delay, and other disabilities.12

Signs of inflicted head trauma include retinal hemorrhages and subarachnoid hemorrhage documented by cerebrospinal fluid examination and a CT scan. Additional injuries include brainstem and spinal cord hematoma, subdural hematoma or cerebral contusion, and spinal cord injuries.12

Intentional injuries should also be considered if the child has shock that does not respond to conventional therapy. For example, if the child exhibits shock and has a history of vomiting and diarrhea or a nonspecific history, and the child’s perfusion and level of consciousness do not improve with adequate hydration, then other causes of shock should be considered, such as intraabdominal injury (Fig. 19-12).

Responsibilities of the Healthcare Team

The first priority in the care of the abused child is providing necessary resuscitation and support of cardiopulmonary function. In addition, the child must be protected from further abuse, and both the child and the family must receive compassionate emotional support. The parents may not have injured the child, but they are likely to feel guilty that they left the child in the care of someone who hurt the child.

The trauma team should carefully document the size, shape, and color of all injuries, but the recording should not interfere with or delay the resuscitation. If possible, color photographs of the child should be taken as soon as possible after the child’s arrival, but this should not delay the institution of appropriate care.

A thorough examination is required to identify all current injuries and evidence of healed injuries. A skeletal series of radiographs and possibly a bone scan will be performed to identify healed fractures. Levels of biologic markers of head injury can be determined from blood or cerebral spinal fluid and can assist in the identification of head injury when inflicted trauma is suggested in the child without neurologic symptoms.,6 These markers can also be useful for monitoring the child’s response to therapy and for predicting outcome of the head injury.24

Suspected abuse must be reported to the local child protective service agency, and nurses must be familiar with the hospital policy and the sequence. The child abuse team is often the first and best contact and can advise the nurse and the entire team regarding documentation. The report to the local child protective service agency ultimately must be in writing, although an initial telephone contact may be acceptable. The child protective agency usually will arrange that temporary custody of the child be awarded to the hospital or to the state. The healthcare team must be aware of this custody information, because the child’s custodian must provide permission for any elective surgery or procedures for the duration of the custody order.

If a child abuse team is present in the hospital, they should be consulted about the proper recording of injuries and documentation of parental statements. This team also is experienced in examining abused children and frequently will identify additional injuries that may be related to abuse.40

References

1 American Academy of Pediatrics. Management of pediatric trauma policy statement. Pediatrics. 2008;121:849-859.

2 American Academy of Pediatrics and American College of Emergency Physicians: Pediatric trauma. . APLS: the pediatric emergency medicine resource. ed 4, Sudbury, MA; Jones and Bartlett:2006

3 American College of Surgeons, Committee on Trauma. Advanced Trauma Life Support for Doctors. Extremes of Age: pediatric trauma, ed 7, Chicago: American College of Surgeons; 2004:242-261.

4 Baird J.S., Cooper A. Multiple trauma. In Nichols D.G., editor: Rogers’ textbook of pediatric intensive care, ed 4, Philadelphia: Lippincott, Williams and Wilkins, 2008.

5 Spinal cord injuries. In Barkin R., Rosen P., editors: Emergency pediatrics, ed 3, Mosby: St Louis, 1990.

6 Berger R.P., et al. Multiplex assessment of serum biomarker concentrations in well appearing children with inflicted traumatic brain injury. Pediatr Res. 2009;65:97-102.

7 Borse N.N., et al. CDC childhood injury report: patterns of unintentional injuries among 0-19 year olds in the United States, 2000-2006. Atlanta GA: Centers for Disease Control and Prevention, National Center for Injury Prevention and Control; 2008.

8 Brogan D.R. Rehabilitation service needs: physicians perceptions and referrals. Arch Phys Med Rehabil. 1981;62:215.

8a Brown R.L., Garcia V.F. Genitourinary trauma. In O’Neill J., Grossfeld J.L., Coran A.G., Fonkalsrud E.W., editors: Grossfeld: pediatric surgery, ed 6, Mosby: Saint Louis, 2006. an imprint of Elsevier

9 Carroll C.A., Haase C.C. The function of protective services in child abuse and neglect. In Heifer R.E., Kempe R.S., editors: The battered child, ed 4, Chicago: University of Chicago Press, 1987.

9a Chameides L., Samson S., Schexnayder S., Hazinski M.F., editors. Pediatric advanced life support provider manual. Dallas: American Heart Association, 2011.

10 Champion H.R., Sacco W.J., Carnazzo A.J., et al. Trauma score. Crit Care Med. 1981;9:672.

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