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The Annals of Thoracic Surgery, Vol 47, 684-688, Copyright © 1989 by The Society of Thoracic Surgeons
AC Fiore, KS Naunheim, GC Kaiser, VL Willman, LR McBride, DG Pennington and HB Barner
The role of retrograde coronary sinus cardioplegia in patients undergoing
elective coronary artery bypass grafting has not been fully defined. Forty
patients undergoing coronary artery bypass grafting received either aortic
root (20 patients) or coronary sinus (20 patients) cold potassium blood
cardioplegia. The patients were similar with respect to age, ventricular
function, severity of coronary artery disease, cross-clamp time,
completeness of revascularization, frequency of internal mammary artery
grafting, and mean infusate volume and temperature. The time required to
deliver the initial dose of cardioplegic solution and the time to achieve
arrest were prolonged in the coronary sinus group (p less than 0.001 and p
less than 0.02, respectively). There were no differences between the two
groups postoperatively with regard to enzymatic indices, hemodynamic
measurement, or clinical outcome. Right ventricular function was preserved
equally in both groups. We conclude that coronary sinus cardioplegia is a
safe alternative to aortic root perfusion, but offers no advantage in
elective myocardial revascularization.
ARTICLES
Coronary sinus versus aortic root perfusion with blood cardioplegia in elective myocardial revascularization
Department of Surgery, St. Louis University Medical Center, MO 63110- 0250.
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