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Curr Drug Saf ; 5(1): 73-8, 2010 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-20210722

RESUMEN

Prokinetic agents are a very large family of drugs with different mechanisms of action. Only QT prolongation by cisapride has made notable impact and deserved its partial restriction and/or withdrawal from the market. Postmarketing surveillance initially showed that cisapride was generally safe and well tolerated, but in the past decade, more recent data have shown some risk in the patient populations. QT prolongation by prokinetic agents can raised from different mechanisms: some involve increased plasma concentrations of cisapride due to increased bioavailability by inhibiting P glycoprotein, and inhibition of metabolism or deficit in the elimination. On the other hand, pharmacodynamic interactions can also enhance the arrhythmogenic effect of cisapride. The present article presents the mechanisms and reviews the main interactions studied so far, and the role of pharmacovigilance in the detection of rare clinical events. We emphasize the need for physicians to look for conditions (either clinical or not) prone to increase the risk of QT interval prolongation.


Asunto(s)
Cisaprida/efectos adversos , Fármacos Gastrointestinales/efectos adversos , Síndrome de QT Prolongado/inducido químicamente , Miembro 1 de la Subfamilia B de Casetes de Unión a ATP/antagonistas & inhibidores , Sistemas de Registro de Reacción Adversa a Medicamentos , Animales , Disponibilidad Biológica , Cisaprida/farmacocinética , Interacciones Farmacológicas , Fármacos Gastrointestinales/farmacocinética , Humanos , Factores de Riesgo , Agonistas de Receptores de Serotonina/efectos adversos , Agonistas de Receptores de Serotonina/farmacocinética
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