Question

What is the recommended response to a drop in PaO2 when the PEEP level is reduced in a mechanically ventilated patient?

A) Increase the FIO2.

B) Return the PEEP to the previous level.

C) Increase the rate of mechanical breaths.

D) Do nothing.

Answer 1

The recommended response to a drop in PaO2 when PEEP is reduced in a ventilated patient is to return the PEEP to the previous level to maintain alveolar recruitment and oxygenation.

Step-by-step explanation:

If a mechanically ventilated patient experiences a drop in PaO2 upon a reduction in Positive End-Expiratory Pressure (PEEP), the recommended response is to return the PEEP to the previous level. This approach is favored because PEEP helps to maintain alveolar recruitment and prevent alveolar collapse, thereby improving oxygenation. An increase in the fraction of inspired oxygen (FIO2) could be considered as an alternative measure, but typically the initial step would be to revert to the previous PEEP level, as decreasing PEEP can lead to de-recruitment and subsequent decreased oxygenation.