Abstract: Objective To seek a suitable type of peritoneal dialysis (PD) catheter by comparing catheterrelated complications in patients used Tenckhoff coiled catheter, swan- neck coiled catheter or swan- neck straight catheter. Methods A total of 820 end- stage renal disease patients with catheterization for maintenance
PD in this center from Jan. 2002 to Aug. 2011 were enrolled in this study. The catheter used included Tenckhoff coiled catheter (n=231), swan-neck coiled catheter (n=126) and swan-neck pipe (n=463). Open surgery was used for the placement of the catheters. The incisions located at 2.5cm aside from the center line, 12cm above pubic symphysis for Tenckhoff coiled and swan-neck straight catheters, and 13cm, 15cm or 17cm above pubic symphysis for swan-neck coiled catheter according to the catheterization stage. They were followed up for more than three months, and catheter-related complications were observed. Results In the 820 patients, 490 cases were males and 330 cases were females with the average age of 42.3±14.7 years (13-92 years of age). The primary diseases for PD included chronic glomerulonephritis (n=622), lupus nephritis (n= 52), diabetic nephropathy (n=65), chronic interstitial nephritis (n=22), hypertensive renal damage (n=19), polycystic kidney disease (n=10), and other (n=30). Catheter dislocation was found in 12 cases (5.2%), 19 cases (15.1%) and 9 cases (1.9%) in Tenckhoff coiled, swan-neck coiled, and swan-neck straight catheter groups, respectively (χ2=36.900, P=0.001), and was found in 5 cases, 6 cases and 8 cases in swan-neck coiled catheter group placed the catheters 13cm, 15cm, and 17cm above pubic symphysis respectively (χ2=3.121, P=0.268). In Tenckhoff coiled, swan-neck coiled, and swan-neck straight catheter groups, catheter obstruction was found in 7 cases (3.0%), 6 cases (4.8%), and 9 cases (1.9%) respectively (χ2=3.161, P=0.206), re-catheterization was performed in 6 cases, 10 cases, and 7 cases respectively (χ2=12.255, P=0.002), reset of the dislocated catheters
occurred in one case, 6 cases, and 4 cases respectively (χ2=10.364, P=0.006), and tunnel orifice infection occurred in 2 cases in every groups (χ2=3.857, P=0.145). Conclusion The rate of catheter dislocation was lowest in swan-neck straight catheter group, and was highest in swan-neck coiled catheter group. In swan-neck coiled catheter group, the catheter dislocation was relatively difficult to be reset with higher rate of re-catheterization.

Key words: Peritoneal dialysis, Insertion of catheter, Complication