OBJECTIVE: To evaluate the technique of insertion, complication rates, and survival rates of Toronto-Western Hospital (TWH) peritoneal catheters in continuous ambulatory peritoneal dialysis (CAPD) patients. PATIENTS AND METHODS: A total of 222 TWH catheters were inserted into 203 CAPD patients (113 males and 90 females) with end-stage chronic renal failure during a period of 14 years (1 January 1982 to 31 August 1995). The mean age of the patients was 58.5 years (range 18-86 years). For the first 6 years, the peritoneal cavity approach was performed via a lower midline incision (45 insertions), various other approaches (17 insertions), and, finally, for the last 160 insertions (for approximately 8 years) the transverse paraumbilical incision was exclusively employed. The duration of CAPD ranged between 1 to 151 months (mean time 33.2 months). RESULTS: Regarding early and late complications (namely leakages, obstructions, eviscerations, tunnel infections, herniation, and others), as well as catheter survival, the transverse paraumbilical insertion, compared to other approaches, had the smallest number of complications. Thus, early leakage occurred in 5/222 (2.25%) versus 10/222 (4.5%), obstruction nil versus 2/222 (0.9%), and evisceration nil versus 1/222 (0.45%). In addition, as far as the late complications are concerned: tunnel infections 5/222 (2.22%) versus 13/222 (5.85%), herniations 1/222 (0.45%) versus 16/222 (7.3%), and cuff protrusion nil versus 7/222 (3.1%). Finally, overall peritonitis occurred with a rate of one episode every 21.2 months. Actuarial survival for 1 and 3 years was 75% and 37%, respectively. CONCLUSIONS: The transverse paraumbilical incision seems to be the most advantageous approach in inserting (by "surgical method") theTWH catheters. We found it to be a safe, simple, versatile procedure, giving good results in all parameters concerned.

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