Which of the following accurately describes a physiologic effect of collapsed alveoli in a surfactant-deficient lung?
Understand the Problem
The question is asking which statement accurately describes the physiological effects of collapsed alveoli in a lung that lacks sufficient surfactant. It presents multiple-choice options regarding various effects such as lung compliance and pulmonary vascular resistance.
Answer
Collapsed alveoli lead to increased pulmonary vascular resistance.
The final answer is: Collapsed alveoli lead to increased pulmonary vascular resistance.
Answer for screen readers
The final answer is: Collapsed alveoli lead to increased pulmonary vascular resistance.
More Information
In surfactant-deficient lungs, the collapse of alveoli reduces the surface area for gas exchange, leading to ventilation-perfusion mismatch and increased pulmonary vascular resistance.
Tips
A common mistake is to assume collapsed alveoli do not affect gas exchange, but they significantly impair it, leading to increased resistance.
Sources
- Surfactant - StatPearls - NCBI Bookshelf - ncbi.nlm.nih.gov
- An adverse outcome pathway for lung surfactant function inhibition - sciencedirect.com
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