Which of the following pressure gradients is responsible for maintaining alveolar inflation?
a. Transpulmonary pressure gradient (Palv – Ppl)
b. Transthoracic pressure gradient (Ppl – Pbs)
c. Transcardiac pressure gradient (Pca – Palv)
d. Transrespiratory pressure gradient (Palv – Pao)
ANS: A
Transpulmonary or PL is the pressure difference that maintains alveolar inflation.
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