How do the positive and negative effects of positive-pressure ventilation (PPV) on stroke volume influence the pulse pressure of a fully hypervolemic patient receiving mechanical ventilation? The pulse pressure will ___________________
A. increase
B. decrease
C. remain constant
D. fluctuate significantly
?ANS: C
A. Incorrect response: See explanation C.
B. Incorrect response: See explanation C.
C. Correct response: In patients who are fully volume replete or hypervolemic, positive and negative effects of ventilation on stroke volume tend to balance each other, so that the pulse pressure remains relatively constant.
D. Incorrect response: See explanation C ?
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