Which of the following would have a negative impact on cardiac contractility?
1) Acidosis
2) Digitalis
3) Hypoxia
4) Norepinephrine
A)1, 2, and 3
B)2 and 4 only
C)4 only
D)1 and 3 only

Question

Quizplus · Accepted Answer

Acidosis and hypoxia negatively impact cardiac contractility by impairing the heart muscle's ability to contract. Digitalis increases contractility, and norepinephrine also increases contractility through its action on beta-1 adrenergic receptors.

Which of the Following Would Have a Negative Impact on Cardiac