NR 508 : Advanced Pharmacology Exam Guide (Latest, 2021/ 2022) Chamberlain College

Document Content and Description Below

1. A patient who has stable angina pectoris and a history of previous myocardial infarction takes nitroglycerin and verapamil. The patient asks the primary care nurse practitioner (NP) why it is neces... sary to take verapamil. The NP should tell the patient that verapamil: a. improves blood flow and oxygen delivery to the heart. b. increases the rate of contraction of the cardiac muscle. c. increases the force of contraction of the cardiac muscle. d. has a positive inotropic effect to increase cardiac output. ANS: A Verapamil decreases the force of smooth muscle contraction in the smooth muscle of the coronary and peripheral vessels; this results in coronary artery dilation, which lowers coronary resistance and improves blood flow through collateral vessels as well as oxygen delivery to ischemic areas of the heart. Calcium channel blockers do not increase the rate or force of contraction of the heart. [Show More]

Last updated: 1 year ago

Preview 1 out of 3 pages