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Eur J Cardiothorac Surg 1999;15:663-666
© 1999 Elsevier Science NL

Intermediate term results of total lymphoid irradiation for the treatment of non-specific graft dysfunction after heart transplantation

^a Department of Cardiological Sciences, St. George's Hospital, Blackshaw Road, London SW17 0QT, UK
^b Department of Cardiothoracic Surgery, St. George's Hospital, Blackshaw Road, London SW17 0QT, UK
^c Department of Radiotherapy, Royal Marsden NHS Trust, London, UK

Received 28 September 1998; received in revised form 18 January 1999; accepted 18 January 1999.

Corresponding author. Tel.: +44-181-725-1094; fax: +44-181-725-2049.

Background: A proportion of heart transplant recipients develop poor graft function in the absence of cellular infiltrate in endomyocardial biopsies or transplant associated coronary artery disease. The condition has a poor prognosis and its aetiology is poorly understood. We report encouraging intermediate term results with total lymphoid irradiation (TLI) in the management of this condition. Methods: Eleven adult cardiac transplant recipients who developed severe allograft dysfunction (NYHA class-4) at a median period of 4 months after orthotopic heart transplantation were successfully treated with TLI. Endomyocardial biopsies and coronary angiography were normal in each patient and biventricular failure developed in spite of immunosuppression with Cyclosporin-A, Azathioprine, oral Prednisolone, Cyclophosphamide and intravenous Methylprednisolone therapy. Total lymphoid irradiation was given with standard Mantle and inverted Y-fields over ten treatments to achieve a cumulative dose of 8 Gy. Results: Each patient had a significant improvement in clinical response and in ventricular performance within 2 months of commencing TLI. Nine patients are currently well (four NHYA class-1, five NHYA class-2) at 4–48 (median 26) months following TLI. Two patients died; one from bacterial septicaemia and one as a consequence of chronic renal failure. Three patients developed opportunistic infection which was successfully treated with appropriate antimicrobial agents. An Ebstein–Barr virus associated lymphoproliferative disorder occurred in one patient and was successfully treated by reduction in immunosuppression and high dose Acyclovir. Two patients developed transient bone marrow suppression. Conclusion: The intermediate term results of TLI in the management of poor graft function in cardiac transplant recipients with normal endomyocardial biopsies and coronary angiography are encouraging. Although complications of opportunistic infection, bone marrow suppression and lymphoproliferative disorder occurred, treatment was successful in each case.

Key Words: Heart transplantation • Total lymphoid irradiation • Non-specific graft dysfunction