During ventilatory support, peak inspiratory pressure (PIP) is the pressure needed to overcome which of the following?
1. Chest wall compliance
2. Lung compliance
3. Airway resistance
4. Systemic arterial pressure
a. 1 and 2 only
b. 2 and 3 only
c. 1, 2, and 3 only
d. 2, 3, and 4 only
ANS: C
During positive pressure mechanical ventilation, peak inspiratory pressure (PIP) is the pressure necessary to overcome airway resistance and lung and chest wall compliance.
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