What probably represents the most significant problem while performing calorimetry on a patient being mechanically ventilated?
a. Compensating for mechanical dead space
b. Leaks in the circuit
c. Volume compression during inspiration
d. High PEEP levels
ANS: B
Perhaps the most significant problem in performing indirect calorimetry on mechanically venti-lated patients is the presence of leaks (circuit, tracheal tube cuff, and chest tubes).
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