The nurse is caring for a patient following insertion of an intraaortic balloon pump (IABP) for cardiogenic shock unresponsive to pharmacotherapy. Which hemodynamic parameter best indicates an appropriate response to therapy?
a. Cardiac index (CI) of 2.5 L/min/m2
b. Pulmonary artery diastolic pressure of 26 mm Hg
c. Pulmonary artery occlusion pressure (PAOP) of 22 mm Hg
d. Systemic vascular resistance (SVR) of 1600 dynes/sec/cm-5
A
Desired outcomes for a patient in cardiogenic shock with an IABP include decreased SVR, diminished symptoms of myocardial ischemia (chest pain, ST-segment elevation), increased stroke volume, and increased cardiac output and cardiac index. A cardiac index of 2.5 L/min is within normal limits. All other values are high and would not indicate an appropriate response to therapy.
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