What is the best single measure of effective ventilation in the intensive care unit patient?

a. Dead space-tidal volume ratio
b. PaCO2
c. End-tidal PCO2
d. Qs/Qt

ANS: B
Because of the relationship between alveolar ventilation and PaCO2, the single best index of ef-fective ventilation is measurement of the PaCO2.

Health Professions

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