An inadequate flow setting during volume ventilation will cause which of the following to oc-cur?
a. The volume curve will drop below the zero baseline.
b. The volume curve will not drop to the zero baseline.
c. The exhaled flow will take longer to rise to the zero baseline.
d. The pressure-time curve will appear con-cave during inspiration.
ANS: D
When the flow rate setting is inadequate, the pressure-time scalar takes a concave shape during inspiration. A volume curve dropping below baseline is indicative of active exhalation. A volume curve that ends above baseline indicates a leak. An exhaled flow curve that takes the entire ex-piratory time to rise back to zero baseline is indicative of increased airway resistance.
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