Which of the following agents are considered to be negative inotropic drugs?
I.Propranolol
II.Dobutamine
III.Isoproterenol
IV.Atenolol
A) I and IV only
B) I. II, III. and IV
C) I, III, and IV only
D) I only

Question

Quizplus · Accepted Answer

Propranolol and Atenolol are both beta-blockers which are considered negative inotropic drugs, meaning they reduce the force of contraction of the heart muscle. Dobutamine and Isoproterenol, on the other hand, are beta-agonists which increase the force of contraction of the heart and are considered positive inotropic drugs. Choice B is incorrect as it includes both positive and negative inotropic drugs. Choice C only includes two out of the four options that are negative inotropic drugs. Choice D only includes one of the four options that are negative inotropic drugs.

Which of the Following Agents Are Considered to Be Negative