Clip Closure Prevents Bleeding After Endoscopic Resection of Large Colon Polyps in a Randomized Trial

Area of Science:

• Gastroenterology and Endoscopy
• Colorectal Surgery
• Medical Interventions and Complication Management

Background:

• Bleeding is a frequent and severe complication following endoscopic mucosal resection (EMR) of large colon polyps.
• This complication leads to significant patient morbidity and increased healthcare costs.
• The study investigates prophylactic hemoclip closure to mitigate post-EMR bleeding risk.

Purpose of the Study:

• To determine if prophylactic closure of mucosal defects with hemoclips reduces bleeding after large colon polyp resection.
• To assess the impact of clip closure on severe postprocedure bleeding events within 30 days.

Main Methods:

• A multicenter, randomized trial involving 919 patients with large (≥20 mm) non-pedunculated colon polyps.
• Patients were randomized to either endoscopic clip closure or no closure (control group).
• Primary outcome was severe postprocedure bleeding requiring hospitalization, transfusion, or intervention; subgroup analyses considered polyp location and size.

Main Results:

• Postprocedure bleeding occurred in 3.5% of the clip group versus 7.1% in the control group (absolute risk difference [ARD] 3.6%).
• The protective effect was more pronounced in proximal large polyps (3.3% vs 9.6%, ARD 6.3%), but not significant for distal polyps.
• Serious adverse events were reduced in the clip group (4.8% vs 9.5%, ARD 4.6%).

Conclusions:

• Endoscopic clip closure effectively reduces the risk of postprocedure bleeding after large colon polyp resection.
• The benefit of clip closure is primarily observed for large polyps located in the proximal colon.
• Prophylactic clipping is a safe and effective strategy to decrease bleeding complications and serious adverse events.