To find out if patients undergoing peritoneal dialysis (PD) have an increased risk of primary vascular thrombosis of the renal allograft, compared with patients on hemodialysis (HD).
Design
Observational, retrospective cohort study.
Setting
Tertiary care hospital, covering an approximate population of 2000000. Extensive use of suboptimal donors for renal transplantation.
Patients and Methods
The study included 827 patients receiving a cadaveric renal transplantation (RTx) in our center between 1988 and 1997 (700 on HD and 127 on PD). We searched for a potential difference in the incidence of graft thrombosis, according to the pretransplant dialysis modality and taking into consideration the main reported risk factors for this complication of RTx.
Results
The accumulated incidence of primary graft thrombosis was 4.7% in PD patients, and 6.1% in HD patients (NS). Arterial and venous thrombosis were also similar in both groups. Logistic regression analysis demonstrated that extremes of age of the donor, use of the right kidney, protracted cold ischemia, delayed graft function, and transplantation to a hypersensitized recipient independently predicted graft thrombosis. Peritoneal dialysis was not independently associated with the complication under study (adjusted odds ratio HD/PD = 2.5, 95% CI = 0.8 7.7).
Conclusions
Peritoneal dialysis is not associated with an increased risk of primary vascular thrombosis of the renal allograft.
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