Difficulty: Medium
Average Score: 66%
Simulated
The cardiac monitor of the client diagnosed with PrinzmetalÔÇÖs angina shows a prolonged PR interval of 0.32 seconds. Which prescribed medication should the nurse question administering to the client?
Correct answer
D
Rationale
Atenolol (Tenormin), a beta blocker, blocks stimulation of beta1 (myocardial)-adrenergic receptors, causing a reduction in BP and HR. A side effect of the medication is a prolongation of the PR interval (normal PR interval is 0.12 to 0.20 second). Continued use of the drug can result in heart block. The nurse should question administering atenolol. Other medications do not prolong the PR interval.