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  • Title: Prospective Randomized Study Comparing a Single-Cuff Self-Locating Catheter with a Single-Cuff Straight Tenckhoff Catheter in Peritoneal Dialysis.
    Author: Sanchez-Canel JJ, Garcia-Perez H, Garcia-Calvo R, Pascual MJ, Casado D.
    Journal: Perit Dial Int; 2016; 36(1):52-9. PubMed ID: 25185016.
    Abstract:
    UNLABELLED: ♦ OBJECTIVES: Peritoneal dialysis (PD) catheters are critical to the success of the technique. However, few studies provide evidence about which design helps to reduce complications. Self-locating catheters (SLCs) are used to avoid displacement of the catheter tip. The incidence of mechanical and infectious complications and catheter survival rate were assessed in Tenckhoff PD catheters. ♦ DESIGN: The prospective randomized study compared drainage problems in 40 incident PD patients using a single-cuff SLCs and 38 patients using a single-cuff, straight Tenckhoff catheter (TC). ♦ RESULTS: No significant differences were observed in the number of complications in the Pre period (from the insertion of the catheter to the start of the technique); however, the number of complications was lower in the SLC group during Post (p = 0.021) and Total period (p = 0.048). The number of problems related to catheter malfunction for each period: Pre, Post, and Total, was significantly lower with SLCs vs TCs (p = 0.018, p = 0.001 and p = 0.003, respectively). Problems were solved more easily with SLCs, using laxatives, with less need for fluoroscopic placement and no need for surgical replacement, as opposed to the TC group: Pre (not significant), Post (p = 0.007), and Total (p = 0.011).Median survival was 39.6 months (30.9 - 48.3) for SLCs and 30.1 months (22.6 - 37.5) for TCs, which is not a significant difference. However, SLCs have a higher malposition-free survival rate. Multivariate logistic regression models only included the variable "type of catheter" as a predictor of malfunction during the Pre period (odds ratio [OR] = 4.154). The Post period included the variables, "type of catheter" (OR = 7.701) and "age" (OR = 1.047), and the Total period only included the variable "type of catheter" (OR = 4.487), which indicates an increased probability of malfunction with the use of TCs vs SLCs. The variables (gender, previous intra-abdominal surgery, body mass index (BMI) and diabetes mellitus) did not add predictive value to the models (p > 0.05). ♦ CONCLUSION: The study confirms the hypothesis that TCs have more malfunctions and a lower malposition-free survival rate than SLCs, and TCs are considered as the highest risk factor for malfunction during all study periods.
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