Practice Quiz

Respiratory Therapist

Category - Initiation and Modification of Interventions

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Select all statements that are true regarding CPAP and/or PEEP:
  1. CPAP and PEEP are for oxygenation, not ventilation.
  2. Emphysema patient do not need PEEP.
  3. Asthmatics need PEEP when being mechanically ventilated.
  4. PEEP can be used on all modes of mechanical ventilation.
Explanation
Answers: A, B, and D-CPAP and PEEP are for oxygenation, not ventilation; emphysema patients do not need PEEP, and PEEP can be used on all modes of mechanical ventilation.

PEEP is applied only on set breaths, not on spontaneous breaths as in SIMV or IMV modes. PEEP in SIMV or IMV mode on spontaneous breaths is actually considered CPAP because the back pressure is applied on both inhalation and exhalation.

Emphysema patients do not need PEEP because they already have an increased FRC. Asthmatic patients do not need PEEP as they are experiencing bronchospasm but do not have compromised alveoli.
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