What Is the Best Single Measure of Effective Ventilation in the Intensive

Multiple Choice

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) $\dot { \mathrm { Q } } _ { s } / \dot { \mathrm { Q } } _ { t }$