VENTILATOR MANAGEMENT

Published on 12/06/2015 by admin

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Last modified 12/06/2015

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CHAPTER 11 VENTILATOR MANAGEMENT

PRETEST QUESTIONS

Answer the pretest questions before studying the chapter. This will help you determine your strong and weak areas in the material covered.

1. The following information has been obtained from a ventilator patient.

Peak inspiratory pressure 48 cm H2O
Plateau pressure 27 cm H2O
VT 850 mL
PEEP 4 cm H2O

On the basis of these data, the patient’s static lung compliance is approximately which of the following?

2. A volume-cycled ventilator is in the control mode and the I:E inspiratory/expiratory ratio alarm is sounding. Which control adjustment would correct this problem?

3. Mechanical ventilation can lead to which of the following complications?

4. Static lung compliance will decrease as a result of which of the following?

5. These data have been collected from a patient whose ventilator was in the control mode.

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To increase this patient’s PaCO2 to 40 mm Hg, the ventilator rate should be adjusted to what level?

6. The following data have been collected from a patient using a volume ventilator in the control mode.

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Based on this information, the respiratory therapist should recommend which of the following ventilator changes?

See answers and rationales at the back of the text.

REVIEW

I. MECHANICAL VENTILATORS

CRT Exam Content Matrix: IIA6a-b, IIA11a, d, IIID2c, IIID10, IIIF2i6,9, IIIG3f,i,k, l

RRT Exam Content Matrix: IIA2a-b, IIID2c, IIID8, IIIF2e6, IIIG3f,h,k

II. VENTILATOR CONTROLS

CRT Exam Content Matrix: IIID2b,d, IIIF2i1-5,11, IIIG3a-e

RRT Exam Content Matrix: IIID2b,d, IIIF2e1,2,3,4,5,9, IIIG3a-e

For males

106 + [6 × (height in inches − 60 in)]

For females

105 + [5 × (height in inches − 60 in)]

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EXAMPLE:

Set VT at 200 mL (0.2 L). Peak pressure reached is 40 cm H2O.

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This means that once the patient has started using the ventilator, 5 mL of the set tidal volume will be lost in the tubing for every 1 cm H2O registering on the manometer.

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EXAMPLE:

VT 800 mL (0.8 L)
Rate 12/min
Flow rate 40 L/min

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