Nephrol Dial Transplant (2000) 15: 1865-1868
© 2000 European Renal Association-European Dialysis and Transplant Association
Brief Report
Low dose aspirin as prophylaxis against renal-vein thrombosis in renal-transplant recipients
Nuffield Department of Surgery, Oxford Transplant Centre, Churchill Hospital, Headington, Oxford, UK
Background. Renal-vein thrombosis (RVT) is an infrequent event that accounts for a high proportion of early renal allograft losses, since graft failure secondary to acute irreversible rejection is now relatively rare. The cause of RVT may be related to technical problems, clotting disorders, diabetes, or cyclosporin, but is often difficult to define.
Methods. This retrospective study was performed to examine the influence of aspirin on the incidence of RVT in cadaveric and living-related renal transplant recipients receiving cyclosporin-based triple immunosuppression. The Oxford Transplant Centre database was used to identify all early (<30 day) non-immunological graft failures and case histories were examined for clinical and pathological evidence of RVT. In July 1991, aspirin (75 mg o.d. starting immediately before and continuing for 1 month post-transplant) was introduced as routine prophylaxis against RVT. Prior to this, aspirin prophylaxis was not used.
Results. In the 6-year period from July 1985 to June 1991, there were 27 cases of RVT in 475 transplants (5.6%). In the subsequent 6-year period, there were six cases of RVT in 480 transplants (1.2%) (P<0.01).
Conclusion. Although not abolished, this indicates a significant reduction in the incidence of RVT with the addition of low-dose aspirin.
Keywords: low-dose aspirin; prophylaxis; renal-transplant recipients; renal-vein thrombosis; retrospective study
Correspondence and offprint requests to: Mr D. W. R. Gray, Oxford Transplant Centre, Churchill Hospital, Oxford OX3 7LJ, UK.
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