What is the primary physiologic goal of applying positive end-expiratory pressure in a mechanically ventilated patient?
Answer and explanation
Correct answer: B. Preventing end-expiratory alveolar collapse
Answer: Preventing end-expiratory alveolar collapse.
Why not the others: PEEP increases rather than reduces functional residual capacity; PEEP increases rather than decreases mean intrathoracic pressure; Increasing dead space ventilation would impair gas exchange and worsen carbon dioxide retention.
Why not the others: PEEP increases rather than reduces functional residual capacity; PEEP increases rather than decreases mean intrathoracic pressure; Increasing dead space ventilation would impair gas exchange and worsen carbon dioxide retention.
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