A patient with respiratory failure has arterial pressure–based cardiac output (APCO) monitoring and is receiving mechanical ventilation with peak end-expiratory pressure (PEEP) of 12 cm H2O
Which information indicates that a change in the ventilator settings may be required?
a. The arterial pressure is 90/46.
b. The heart rate is 58 beats/minute.
c. The stroke volume is increased.
d. The stroke volume variation is 12%.
ANS: A
The hypotension suggests that the high intrathoracic pressure caused by the PEEP may be decreasing venous return and (potentially) cardiac output. The other assessment data would not be a direct result of PEEP and mechanical ventilation.
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