Background
The effect of pre‐transplant treatment modality on renal transplant outcomes is still controversial. A negative patient selection for treatment with peritoneal dialysis (PD) some years ago gave the impression of poorer transplant survival than with hemodialysis (HD).
Objectives
To evaluate the influence of pre‐transplant treatment (PD, HD, or patients who were pre‐dialysis) on initial delayed graft function (DGF), graft thrombosis (GT), global rejection rate, and survival among patients at a single university hospital with a strong tradition of performing renal transplants.
Patients
The study analyzed 563 renal transplants (HD: 80%, PD: 16.5%, pre‐dialysis: 3.5%) performed at a single center between January 1996 and May 2002.
Results
There were no differences in immunosuppressive protocol during the study. The HD patients were older (p=0.004). The proportion of diabetics was higher among patients who received PD (20%) than in those who underwent HD (8%) and in those who were pre‐dialysis (10%) (p=0.002). There were no differences between PD and HD patients in donor type (brain death: 55.6% PD vs. 55.6% HD; non‐heart‐beating [NHB]: 39% PD vs. 35% HD; dual pediatric: 6% PD vs. 7% HD; dual elderly: 0% PD vs. 2% HD). Despite the higher proportion of diabetics among PD patients, graft and patient survival did not differ between patients coming from PD, HD, and those who were pre‐dialysis. Patient/graft survival after 1 year was 100%/100% with Pre‐D, 96.5%/95% with PD, and 95.6%/92.5% with HD. Patient/graft survival after 3 years was 100%/100% with pre‐dialysis, 94.1%/94.1% with PD, and 91.7%/89% with HD. DGF incidence was higher in HD patients than in PD and pre‐dialysis patients (p<0.001) even when brain‐dead (p<0.01) and NHB (p<0.001) donors were analyzed separately. The global rejection rate was the same for all patients regardless of pre‐transplant treatment. There was a very low rate of graft thrombosis, with no statistical differences between the groups (0.9% PD and 1.3% HD).
Conclusion
Graft and patient survival was similar in patients previously treated with PD or HD and excellent in pre‐dialysis patients. A significantly higher rate of initial DGF was confirmed in HD patients, whereas rejection and GT rates were similar with all pre‐transplant treatment modalities.