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European Journal of Cardio-Thoracic Surgery, Vol 7, 414-419, Copyright © 1993 by European Association for Cardio-thoracic Surgery

ARTICLES

Myocardial preservation using HTK solution for heart transplantation. A multicenter study

H Reichenspurner, C Russ, P Uberfuhr, G Nollert, A Schluter, B Reichart, WP Klovekorn, S Schuler, R Hetzer and W Brett
Department of Cardiac Surgery, University of Munich-Grosshadern, Germany.

Bretschneider HTK solution is commonly used for myocardial preservation. In order to evaluate its protective effect for heart transplantation, a retrospective study was initiated in cooperation with Eurotransplant and five heart transplant centers. Seventy-six female and 524 male patients who underwent cardiac transplantations between 1981 and 1991 were included in this study. Using standardized questionnaires, donor and recipient laboratory data, immunosuppressive therapy and the preoperative, intraoperative and postoperative organ function were documented. The average ischemic time of the donor hearts was 160 min, ranging from 75 min-304 min. Immediate postoperative graft failure was observed in 25 transplantations (4.2%). Within the first 30 days 71 organs (11.8%) failed. Using the chi2-test, a statistically significant increase of acute graft failure and early mortality was evident when they were correlated with the length of ischemic time (P = 0.01). In addition, a higher incidence of early graft failure was observed when the perfusion volume was less than 1500 ml. The 1- and 5- year survival rates were 72% and 63%, respectively. Organ preservation with HTK shows good results as long as the ischemic time does not exceed 4 h. The possibility that an increased perfusion volume allows longer ischemic times cannot be excluded with this study.

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