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

question 33

Multiple Choice

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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Definitions:

Laplace's Law

A law that describes the relationship between the pressure, volume, and tension in the wall of a spherical or cylindrical object, often applied to blood vessels and the heart.

Blood Vessel

Tubes in the body through which blood circulates, including arteries, veins, and capillaries.

Cross-Sectional Area

The area of a particular section of an object or substance that has been cut across its width, used to determine properties like resistance and strength.

Aorta

The body's biggest artery starts from the heart's left ventricle and stretches down to the abdomen, dividing into smaller arteries there.