Psychiatric Emergencies

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Chapter 40 Psychiatric Emergencies

EVALUATION

RESTRAINTS

11 What are the drugs of choice to use as a restraint of a child?

See Table 40-1.

Table 40-1 Drugs of Choice to Use as a Restraint in Children

Drug Dose Comment
Benzodiazepines
Diazepam (Valium) 0.1 mg/kg PO or IM/IV Dose range, 2–10 mg
Lorazepam (Ativan) 0.05 mg/kg PO or IM/IV Dose range, 1–2 mg with titrated dose every 30 minutes
High-potency neuroleptics*
Haloperidol (Haldol) 0.05 mg/kg PO or IM/IV Dose range, 2–5 mg
Droperidol (Inapsine) 0.05 mg/kg IM/IV Dose range, 2.5–5 mg
(0.1–0.15 mg/kg maximum dose) (has shorter half-life [2–4 hours] than haloperidol)
Low-potency neuroleptics
Chlorpromazine (Thorazine) 0.5–1 mg/kg PO or IM/IV Usually 200 mg/d
Thioridazine (Mellaril) 0.5–3 mg/kg PO May cause hypotension
Antihistamines
Diphenhydramine (Benadryl) 1–2 mg/kg PO or IM/IV Usually 12.5–75 mg

IM = intramuscularly, IV = intravenously, PO =orally.

Notes: For substance-induced psychosis due to hallucinogens (such as PCP), benzodiazepines given at 30- to 60-minute intervals appear to be more effective than the neuroleptic medications. For substance-induced psychosis due to stimulant intoxication (such as with cocaine or amphetamine), droperidol may be the optimal choice because of its shorter half-life. Some authors advocate concomitant use of antihistamine with neuroleptics to decrease the likelihood of dystonia.

* Children have a slightly higher risk of dystonia compared to adults. Although very rare, neuroleptic malignant syndrome can occur with these medications.

Droperidol has come under increased scrutiny since the U.S. Food and Drug Administration has issued a “black box” warning because of concerns of a weak association with QT prolongation and torsades de pointes. The extensive experience and safety of this agent in rapid sedation of severely agitated and violent patients leave a quandary with the use of this drug.

Adapted from Shale JH, Shale CM, Mastin WD: A review of the safety and efficacy of droperidol for the rapid sedation of severely agitated and violent patients. J Clin Psychiatry 64:500–505, 2003.

DEPRESSION AND SUICIDAL IDEATION

16 How can a clinician assess the presence of depression and suicidal potential of the depressed patient?

A modified SAD PERSONS Scale has been developed and used in the adult and adolescent populations (Table 40-2).

Table 40-2 Modified Sad Persons Scale

Mnemonic Characteristic Score
Sex Male 1
Age <19 or >45 years 1
Depression/hopelessness Admits to depression; poor concentration, appetite, or sleep 2
Prior attempts/psychiatric care Prior inpatient or outpatient care 1
ETOH/drug use Addiction or frequent use 1
Rational thinking lost Psychosis 2
Single/separated/divorced   1
Organized/serious attempt Life-threatening presentation, careful plan 2
No social supports No family, friends, religious associations 1
Stated future intent Determined to repeat, ambivalent 2

ETOH = ethanol.

A score > 6 suggests 1:1 observation and acute psychiatric evaluation; a score > 10 suggests psychiatric inpatient hospitalization.

Adapted from Hockberger RS, Rostein RJ: Assessment of suicide potential by nonpsychiatrists using the SAD PERSONS Score. J Emerg Med 6:99–107, 1988.

19 What are some medications associated with depression?

See Table 40-3.

Table 40-3 Medications Associated with Depression

Category Specific Medications
Neuropsychiatric Neuroleptics, barbiturates, benzodiazepines, carbamazepine, phenytoin, stimulants
Antimicrobial Ampicillin, griseofulvin, metronidazole, trimethoprim
Anti-inflammatory/analgesic Corticosteroids, opiates
Cardiovascular Clonidine, propranolol
Miscellaneous Chemotherapy, ethanol, caffeine, oral contraceptives

Adapted from Milner KK, Florence T, Glick RL: Mood and anxiety syndromes in emergency psychiatry. Psychiatr Clin North Am 22:755–777, 1999.

AGGRESSION