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The Annals of Thoracic Surgery, Vol 57, 1472-1475, Copyright © 1994 by The Society of Thoracic Surgeons

ARTICLES

Successful use of undersized donors for orthotopic heart transplantation--with a caveat

LH Blackbourne, CG Tribble, SE Langenburg, KN Sinclair, GB Rucker, BB Chan, WD Spotnitz, JD Bergin and IL Kron
Department of Surgery, University of Virginia Health Sciences Center, Charlottesville 22908.

Accepted clinical practice has been to require body weights to be within 20% as a criterion for matching donor to recipient for cardiac transplantation. From November 1989 through September 1993 we began accepting larger differences in body weight between donor and recipient with 80 orthotopic heart transplants performed. Twenty-eight of these transplants used undersized donors (donor-to-recipient body weight ratio [DRBW] of 0.6 to 0.8) with the remaining donors being either size matched (DRBW = 0.8 to 1.0) or oversized (DRBW > 1.0). Thirty-three of the 80 transplant recipients (41%) were classified preoperatively as United Network for Organ Sharing (UNOS) status I and the remaining patients were classified as UNOS status II. Hospital survival for status I recipients was 9 of 14 (64%) for undersized donors, 7 of 8 (87.5%) for sized-matched donors, and 11 of 11 (100%) for oversized donors (p < 0.05). Hospital survival for status II recipients was 12 of 14 (85.7%) for undersized donors, 24 of 24 (100%) for sized-matched donors, and 8 of 9 (88.8%) for oversized donors. Our data support the continued use of hearts from undersized donors in status II recipients. The use of hearts from undersized donors in status I recipients is associated with increased mortality compared with size-matched donors and must be undertaken with caution.




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Copyright © 1994 by The Society of Thoracic Surgeons.