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The Annals of Thoracic Surgery, Vol 55, 1529-1533, Copyright © 1993 by The Society of Thoracic Surgeons

ARTICLES

Lidocaine cardioplegia for prevention of reperfusion ventricular fibrillation

A Baraka, N Hirt, A Dabbous, S Taha, C Rouhana, N el-Khoury, M Ghabash, M Jamhoury and A Sibaii
Department of Anesthesiology, American University of Beirut, Lebanon.

Lidocaine addition to crystalloid cardioplegic solution for prevention of reperfusion ventricular fibrillation after the release of the aortic cross-clamp was studied in 50 patients undergoing coronary artery bypass grafting and in 30 patients undergoing mitral or aortic valve replacement. Twenty-six of the patients undergoing coronary artery bypass grafting received lidocaine, 100 mg/L of cardioplegia, whereas a control group of 24 patients received cardioplegia without lidocaine. In the group undergoing valve replacement, 14 patients received lidocaine cardioplegia and 16 patients served as control. In the coronary artery bypass grafting group, lidocaine cardioplegia reduced significantly the incidence of reperfusion ventricular fibrillation from 100% to 42%. In the valve group, lidocaine cardioplegia also reduced significantly the incidence of reperfusion ventricular fibrillation from 93% to 42%. In both groups, lidocaine cardioplegia decreased the number of direct-current countershocks required to defibrillate the heart, with no significant increase in the incidence of high-grade atrioventricular block.




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Copyright © 1993 by The Society of Thoracic Surgeons.