A 50-year-old male was admitted to the intensive care unit with a diagnosis of acute myocardial infarction (MI).He is being treated for shock.His cardiopulmonary symptoms include low blood pressure,tachycardia,and tachypnea.His skin is pale and cool.The primary cause of his shock is most likely:
A) Rapid heart rate
B) Decreased cardiac contractility
C) Increased capillary permeability
D) Decreased afterload due to vasodilation

Question

Quizplus · Accepted Answer

MI leads to decreased cardiac contractility due to a damaged myocardium and would lead to shock.
MI would lead to decreased contractility; a rapid heart rate would not cause shock.
MI would lead to decreased contractility; increased capillary permeability would not lead to shock.
Decreased afterload will not lead to shock associated with MI.

A 50-Year-Old Male Was Admitted to the Intensive Care Unit