Administration of the antibacterial agent ________ may cause prolongation of the QT interval and development of serious ventricular dysrhythmias.
A) erythromycin or clarithromycin
B) benzylpenicillin or amoxycillin
C) tetracycline or doxycycline
D) gentamicin or tobramycin

Question

Quizplus · Accepted Answer

Erythromycin and clarithromycin are macrolide antibiotics that can cause prolongation of the QT interval and potentially lead to life-threatening ventricular dysrhythmias, especially in patients with pre-existing cardiac conditions or those taking other QT-prolonging medications.

Administration of the Antibacterial Agent ________ May Cause Prolongation of the QT