With Which of the Following is Inotropism Most Associated

Question

With which of the following is inotropism most associated?
A) Heart rate
B) Force of myocardial contraction
C) Oxygen saturation
D) Systemic vascular resistance

Accepted Answer

Inotropism is most associated with the force of myocardial contraction, which refers to the strength of the heart's contractions. Inotropic agents, such as digoxin and dopamine, are used to increase or decrease the force of myocardial contraction. Heart rate is more closely related to chronotropism, oxygen saturation to oxygenation, and systemic vascular resistance to afterload.