A leak around a patient's ET tube cuff during pressure support ventilation (PSV) will cause which of the following to occur?
a. Volume cycle
b. Time cycle
c. Pressure cycle
d. Flow cycle
ANS: B
A leak around a cuff could cause a pressure support breath to never flow cycle. For this reason, most ventilators time cycle at a maximum inspiratory time of 1.5-2 seconds.
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