Question

What factors contribute to the development of auto-positive end-expiratory pressure (PEEP)?

I.high expiratory Raw
II. high inspiratory flows
III. inadequate expiratory time

A) I and II


B) I and III


C) II and III


D) I, II, and III

Answer 1

Auto-PEEP is caused by high expiratory Raw, high inspiratory flows, and inadequate expiratory time.

Step-by-step explanation:

The factors that contribute to the development of auto-positive end-expiratory pressure (PEEP) are:

1. High expiratory Raw: High resistance to the flow of air during expiration can lead to auto-PEEP. This can occur due to diseases like chronic obstructive pulmonary disease (COPD) where there is airway narrowing and increased airway resistance.
2. High inspiratory flows: When inspiratory flows are high, there may not be enough time for complete exhalation, leading to incomplete lung emptying and the trapping of air, resulting in auto-PEEP.
3. Inadequate expiratory time: If the expiratory phase of the breathing cycle is too short, there may not be enough time for complete exhalation, causing air to be trapped in the lungs and resulting in auto-PEEP.

Therefore, the factors that contribute to the development of auto-PEEP are I. high expiratory Raw, II. high inspiratory flows, and III. inadequate expiratory time. The correct answer is D) I, II, and III.