Pharmacology – MCQ 126 – QT interval in premature infants

Drug implicated for prolonging QT interval in a premature baby is :
A. Domperidone
B. Metoclopramide
C. Cisapride
D. Omeprazole

Correct answer : C. Cisapride

Cisapride can cause QT prolongation when administered along with drugs like ketoconazole which inhibit hepatic cytochrome p-450 CYP 3A4 enzyme.