Abstract
From November 1985 to August 1989, 105 patients underwent heart transplantation at our institution of whom 8 (7%) underwent heterotopic heart transplantation (HHTx). There were 7 males and 1 female with a mean age of 49 +/- 6 years (range, 41-58 years), 7 of whom had ischaemic cardiomyopathy and 1 had dilated cardiomyopathy. The indications for HHTx were gross donor/recipient size mismatch, unreliable donor heart, elevated pulmonary vascular resistance and the need for urgent transplantation or their combination. HHTx was performed as a left ventricular bypass in 6 patients and as biventricular bypass in 2 combined with various surgical procedures on the native heart in 5. There was one perioperative death with a mean follow-up of the survivors of 17 +/- 10 months (range, 6-30 months). Comparison of preoperative and postoperative (1 year) 2-D echocardiographic studies of the native heart showed haemodynamic stability of the latter with no substantial changes in left ventricular ejection fraction and cardiac index, while left ventricular end-diastolic volume tended to increase in 2 patients. In conclusion, preservation of the native heart allows recovery or growth of a graft considered unsuitable for orthotopic transplantation. Our experience confirms that HHTx may still be considered a valuable alternative to orthotopic transplantation in selected patients, thus expanding donor utilization.
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