A patient being mechanically ventilated develops hypotension after the respiratory therapist implements the most recent physician orders. The nurse suspects that which ventilator mode might be the cause?

1. PEEP
2. SIMV mode
3. assist-control mode
4. pressure-control mode


Correct Answer: 1
When PEEP is applied, intrathoracic pressure increases further; this can significantly decrease venous return, ventricular filling, stroke volume, and cardiac output. Manifestations of decreased cardiac output include hypotension. Increasing PEEP levels can cause declining blood pressure. Hypotension is not commonly caused by the adjustment of other modes on the ventilator.

Nursing

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