Hemostatic Clips in Polypectomy

Indications and Effectiveness

The American Gastroenterological Association recommends the use of hemostatic clips in polypectomy for polyps ≥20 mm, particularly in the proximal colon, due to their effectiveness in reducing delayed hemorrhage from 7.2% to 3.7% 1, 4
The American Society for Gastrointestinal Endoscopy suggests that clips are effective for preventing bleeding when used prophylactically on large pedunculated polyps with thick stalks, with a significant reduction in bleeding rates 5
For patients on anticoagulants with large polyps, the use of hemostatic clips is recommended to prevent bleeding 1
The use of detachable nylon loops (endoloops) is equally effective as clips for large pedunculated polyps, with a bleeding rate of 2.8% for serrated polyps and 5.8% for adenomas 5

The American College of Gastroenterology states that polyp location is a significant factor, with proximal colon polyps benefiting more from clipping than distal polyps, and serrated polyps having lower bleeding rates than adenomas 1, 4
The cost-effectiveness of routine endoscopic treatment of all post-polypectomy sites is not supported, with a cost-effectiveness analysis showing that it is not a cost-effective approach 4
Delayed post-polypectomy bleeding can still occur despite prophylactic measures, with a risk of up to 15 days after the procedure, highlighting the need for close monitoring and follow-up 3

The use of epinephrine injection prior to polypectomy can reduce bleeding risk, with a significant reduction in bleeding rates compared to clip placement alone 5
Combination approaches, such as loop placement with post-polypectomy clips, have shown improved outcomes compared to epinephrine injection alone, with a significant reduction in bleeding rates 5