Which of the following is false about the P0.1 measure?
a. P0.1 correlates well with central respiratory drive.
b. P0.1 is the airway pressure measured 100 msec after occlusion.
c. P0.1 is an effort-dependent measure of res-piratory drive.
d. Chronic obstructive pulmonary disease (COPD) patients with a P0.1 greater than 6 cm H2O are difficult to wean.
ANS: C
Airway occlusion pressure (P0.1) is the inspiratory pressure measured 100 msec after airway oc-clusion. The P0.1 is effort independent and correlates well with central respiratory drive. Ventila-tor-dependent patients with COPD who have a P0.1 greater than 6 cm H2O tend to be difficult to wean.
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