Comparison between loop-tip guidewire-assisted and conventional endoscopic cannulation in high risk patients

Area of Science:

• Gastroenterology
• Interventional Endoscopy
• Clinical Trials

Background:

• Post-ERCP pancreatitis (PEP) is a significant risk following endoscopic retrograde cholangiopancreatography (ERCP).
• The guidewire biliary cannulation (GWC) technique is hypothesized to improve cannulation success and reduce PEP rates.
• Standard contrast-assisted cannulation (CC) is the conventional method for biliary access.

Purpose of the Study:

• To compare the efficacy of the GWC technique versus the standard CC technique in reducing PEP.
• To evaluate the impact of an atraumatic loop-tip guidewire on cannulation rates and PEP.
• To assess overall complication rates associated with both techniques.

Main Methods:

• A multicenter prospective randomized controlled trial involving 320 patients with naïve papilla.
• Patients were randomly assigned to either the GWC group (n=160) or the CC group (n=160).
• Alternative techniques were used for failed cannulation attempts in both groups.

Main Results:

• The PEP rate was significantly lower in the GWC group (5%) compared to the CC group (12%) (P=0.027).
• Biliary cannulation rates were 81% for GWC and 73% for CC; overall rates reached 98% and 96% respectively after alternative techniques.
• No significant difference in other post-interventional complication rates was observed between the groups.

Conclusions:

• The GWC technique, utilizing a new wire guide, is associated with a reduced rate of PEP.
• GWC demonstrates a favorable safety profile for biliary cannulation in ERCP.
• This technique offers a promising alternative for improving patient outcomes after ERCP.