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

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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.

The Nurse Is Caring for a Patient Following Insertion of an Intraaortic