Modified Simple Peritoneal Wall Anchor Technique (PWAT) in Peritoneal Dialysis

Area of Science:

• Nephrology
• Surgical Innovation
• Medical Devices

Background:

• Outflow obstruction is a frequent complication in peritoneal dialysis (PD), often necessitating catheter removal or replacement.
• Current methods for PD catheter insertion can lead to obstruction and migration, impacting treatment efficacy.
• A novel, simple anchoring technique, the peritoneal wall anchor technique (PWAT), is proposed to mitigate these issues.

Purpose of the Study:

• To describe and evaluate a modified, simple peritoneal wall anchor technique (PWAT) for PD catheter fixation.
• To compare the catheter survival rates between the PWAT and traditional PD catheter insertion methods.
• To assess the incidence of catheter migration and obstruction requiring surgical repair or intervention.

Main Methods:

• A retrospective cohort study comparing 17 PD catheter insertions using the modified PWAT with 54 using the traditional method.
• Primary endpoint: surgical repair for outflow obstruction within 365 days.
• Secondary endpoint: catheter migration with obstruction requiring any intervention within 365 days.
• Catheter survival analyzed using Kaplan-Meier curves.

Main Results:

• Migration-free catheter survival was significantly higher in the PWAT group (100%) versus the traditional group (72.2%, p=0.02).
• Catheter survival without surgical repair or PD cessation was significantly higher in the PWAT group (100%) versus the traditional group (77.8%, p=0.04).
• Improved outcomes were also observed for straight-type catheters in the PWAT group compared to the traditional group.

Conclusions:

• The modified simple PWAT demonstrates superior performance in preventing PD catheter migration and obstruction.
• PWAT significantly enhances long-term catheter survival rates compared to the traditional PD catheter anchoring method.
• This technique offers a promising solution to reduce complications and improve PD patient outcomes.