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The Annals of Thoracic Surgery, Vol 49, 413-417, Copyright © 1990 by The Society of Thoracic Surgeons
F Mori, M Miyamoto, H Tsuboi, H Noda and K Esato
To clarify the effectiveness of nicardipine, one of the dihydropyridine
calcium-channel blockers, for myocardial protection during cold potassium
cardioplegic arrest in pediatric cardiac surgery, a clinical trial of
nicardipine (0.25 mg/L) added to potassium cardioplegic solution was
performed in children undergoing surgical repair of congenital heart
diseases. Twenty patients were selected to receive nicardipine cardioplegia
and 13 patients received a standard potassium cardioplegia, serving as a
control group. Nicardipine cardioplegia provided better cardiac performance
in the early postoperative period and reduced release of the MB isozyme of
creatine kinase, as determined during a 48-hour postoperative period. These
results suggest that nicardipine added to cold potassium cardioplegic
solution offers additional protection for the myocardium during ischemia
and postischemic reperfusion in pediatric cardiac surgery.
ARTICLES
Clinical trial of nicardipine cardioplegia in pediatric cardiac surgery
First Department of Surgery, Yamaguchi University School of Medicine, Japan.
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