A patient has been admitted with anaphylactic shock due to an unknown allergen.The nurse understands that the decrease in the patient's cardiac output is the result of which mechanism?
A) Peripheral vasodilation
B) Increased venous return
C) Increased alveolar ventilation
D) Decreased myocardial contractility

Question

Quizplus · Accepted Answer

Peripheral vasodilation results in decreased venous return.This decreases intravascular volume and the development of relative hypovolemia.Decreased venous return results in decreased stroke volume and a fall in cardiac output.

A Patient Has Been Admitted with Anaphylactic Shock Due to an Unknown