The type of flow curve produced by volume ventilation with constant flow is which of the fol-lowing?
a. Sinusoidal
b. Rectangular
c. Descending ramp
d. Exponential decay
ANS: B
Volume ventilation with a constant flow will produce a rectangular flow curve unless a different flow pattern is chosen. Pressure ventilation creates a descending curve that varies with both lung characteristics and patient flow demand.
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