NCT02594813

Bleeding Rate After EGD and Colonoscopy in Patients Who Continue to Take Antithrombotic Agents

• Status: Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 10,000 (estimated)
• Sponsor: Showa Inan General Hospital · Academic / Other
• Sex: All
• Age: 20 Years – 90 Years
• Healthy volunteers: Not accepted

Summary

The bleeding rate of both EGD (including biopsy) and colonoscopy (including biopsy, cold or hot snare polypectomy, or EMR) in patients who continue to take various antithrombotic drugs is studied prospectively. The immediate or delayed bleeding that requires hemostatic clipping or other endoscopic treatments is defined as the bleeding. Immediate bleeding requiring hemostatic clipping is defined as spurting or oozing which continued for more than 30 seconds. Delayed bleeding is defined as bleeding that requires the endoscopic treatment within 2 weeks after endoscopy. Prophylactic clipping is not performed after taking biopsy and doing polypectomy. Additionally, investigators evaluate the rate of injured submucosal arteries of the excised specimen when the bleeding occurs.

Conditions

• Bleeding After GI Endoscopy

Interventions

Type	Name	Description
PROCEDURE	Biopsy, cold or hot snare polypectomy, or EMR

Timeline

• Start date: 2015-11-01
• Primary completion: 2026-12-01
• Completion: 2026-12-01
• First posted: 2015-11-03
• Last updated: 2025-05-15

Locations

1 site across 1 country: Japan