Comparative study of rendezvous techniques in post-liver transplant biliary stricture

Area of Science:

• Interventional Radiology
• Hepatobiliary Surgery
• Gastroenterology

Background:

• Biliary strictures are a common complication after living donor liver transplantation (LDLT).
• Exchanging percutaneous transhepatic biliary drainage catheters for inside stents is often necessary.
• Angulated or twisted strictures pose technical challenges for stent placement.

Purpose of the Study:

• To evaluate the efficacy and safety of a novel rendezvous technique using the Kumpe (KMP) catheter for biliary stent placement.
• To compare the KMP catheter technique with the traditional guidewire rendezvous technique in LDLT patients.

Main Methods:

• A retrospective comparison of two groups of 19 LDLT patients each undergoing biliary stent placement.
• One group utilized a guidewire for the rendezvous technique, while the other used a KMP catheter.
• Success rates, procedure times, and complication rates were analyzed.

Main Results:

• Both techniques achieved a 100% success rate for stent placement.
• The KMP catheter group demonstrated significantly shorter mean procedure times (1012 s vs. 2037 s, P = 0.022).
• The KMP catheter was noted to be easier to manipulate; complication rates were similar between groups.

Conclusions:

• The KMP catheter rendezvous technique is a fast, safe, and effective alternative for biliary stent placement in LDLT patients.
• This method is particularly useful for managing challenging angulated or twisted biliary strictures.
• It offers a significant procedural time advantage over the guidewire technique.