What is the mode depicted in the pressure-versus-time waveform in the figure?
a. Airway pressure-release ventilation
b. Bilevel positive airway pressure
c. Pressure-controlled intermittent mandato-ry ventilation plus pressure support
d. Volume-controlled intermittent mandatory ventilation plus pressure support
ANS: C
The larger "flat-top" pressure curves represent patient-triggered, pressure-limited, time-cycled breaths from the ventilator. The smaller "flat-top" pressure curves represent patient-triggered, pressure-limited (pressure-supported) spontaneous patient breaths. Pressure-supported spontane-ous breaths between patient-triggered ventilator breaths are depicted in the figure. This is inter-mittent mandatory ventilation, and, more specifically, it is pressure-controlled intermittent man-datory ventilation because the ventilator breaths are pressure limited.
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