Inspection of the airway pressure waveform of a patient receiving volume-controlled continuous mandatory ventilation assist-control with constant flow reveals a large dip or drop in pressure at the beginning of inspiration

Which of the following problems is most likely?
a. The trigger setting is improper.
b. The inspiratory flow is inadequate.
c. The set volume is too large.
d. The pressure limit is too low.

ANS: A
At the beginning of inspiration, a small negative deflection on the manometer suggests an appro-priate sensitivity setting.