NCT02594813|Recruiting
Bleeding Rate After EGD and Colonoscopy in Patients Who Continue to Take Antithrombotic Agents
EGD
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EGD
Sponsor study identifier
observational
10,000
1 country
1
Study Start
November 2015
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
December 2026
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
December 2026
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
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.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
December 2026
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
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Some registry-reported names shown below are not yet linked in this graph.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
October 30, 2015
Actual (reported)November 2015
Date type not reportedThis date has not been verified as actual or estimated.
November 3, 2015
Actual (reported)December 2026
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
December 2026
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
the rate of delayed bleeding
Delayed bleeding defined as bleeding that required endoscopic treatment within 2 weeks after the procedure.
10 years
the rate of immediate bleeding
10 years
the number of clip used
10 years
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
All patients who continue to take antithrombotic drugs undergo EGD including biopsy and colonoscopy including biopsy, snare or hot polypectomy and/or EMR.
Contact the study team to confirm eligibility.
Showa Inan General Hospital
Komagane, Japan
Nonaka E, Horiuchi I, Horiuchi A, Ukai S, Takahata N, Oishi K. The Risk of Colonoscopy-related Bleeding in Patients With or Without Continued Treatment With an Antithrombotic Agent. DEN Open. 2025 Jul 17;6(1):e70175. doi: 10.1002/deo2.70175. eCollection 2026 Apr.
Morita A, Horiuchi I, Tanaka N, Takada H, Graham DY, Horiuchi A. Managing bleeding risk after cold snare polypectomy in patients receiving direct-acting oral anticoagulants. Gastrointest Endosc. 2022 May;95(5):969-974. doi: 10.1016/j.gie.2022.01.005. Epub 2022 Jan 19.
Excised specimens after taking biopsy or doing polypectomy
Akira Horiuchi, MD
Showa Inan General Hospital
First Submitted
October 30, 2015
First Posted
November 3, 2015
Study Start
November 2015
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
December 2026
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
December 2026
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Last Updated
May 15, 2025
Record last verified: 2025-05
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Source: ClinicalTrials.gov.
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