What is the normal trigger delay?
a. Less than 100 msec
b. Less than 150 msec
c. Less than 200 msec
d. Less than 250 msec
ANS: A
Normally the trigger delay should be minimal, less than 100 msec. When it exceeds 150 msec, the cause should be determined. Adjusting the sensitivity, setting the tidal volume appropriately and/or applying PEEP should correct delayed triggering unless there is a true malfunction of the ventilator.
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