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Increased renal allograft thrombosis in CAPD patients
B G Murphy1, C M Hill, D Middleton
1Regional Nephrology Unit, Belfast City Hospital, Northern Ireland, UK.
Summary
Patients on continuous ambulatory peritoneal dialysis (CAPD) experienced more kidney transplant graft losses due to renovascular thrombosis than those on haemodialysis (HD). This risk suggests a need for enhanced perioperative management in CAPD patients.
Area of Science:
- Nephrology
- Transplantation Surgery
- Vascular Surgery
Background:
- Renovascular thrombosis is a critical complication following renal transplantation.
- Continuous ambulatory peritoneal dialysis (CAPD) and haemodialysis (HD) are common renal replacement therapies.
- Understanding risk factors for graft loss is essential for improving transplant outcomes.
Purpose of the Study:
- To compare the incidence of graft loss due to primary renovascular thrombosis between CAPD and HD patients undergoing renal transplantation.
- To identify potential predisposing factors for this complication in CAPD patients.
Main Methods:
- Retrospective analysis of 202 renal transplant procedures (1989-1992).
- Comparison of graft loss rates from renovascular thrombosis between CAPD and HD groups.
- Analysis of donor age and other patient/transplant variables.
Main Results:
- Graft loss from primary renovascular thrombosis was significantly higher in CAPD patients (9 cases) compared to HD patients (0 cases) (P < 0.01).
- All thrombotic graft losses occurred within 16 days post-surgery.
- CAPD patients experiencing thrombosis had significantly older donors (mean 43.0 years) than the overall CAPD group (mean 29.1 years) (P = 0.01).
- No significant differences were found in haematocrit, platelet count, antibody status, cyclosporin use, hypotension, primary diagnosis, smoking, or diabetes.
Conclusions:
- CAPD patients face a higher risk of renal transplant graft loss from renovascular thrombosis compared to HD patients.
- Older donor age may be a contributing factor in CAPD recipients.
- Intensified fluid and anticoagulant management during the perioperative period may be warranted for CAPD patients.