Bleeding rates in patients on blood thinners undergoing endoscopy

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

Observational Showa Inan General Hospital · NCT02594813

This study looks at how often patients on blood thinners bleed during endoscopy procedures like EGD and colonoscopy to see if it's safe for them to have these tests.

Quick facts

Study typeObservational
Enrollment10000 (estimated)
Ages20 Years to 90 Years
SexAll
SponsorShowa Inan General Hospital Academic / other
Locations1 site (Komagane)
Trial IDNCT02594813 on ClinicalTrials.gov

What this trial studies

This observational study investigates the bleeding rates associated with esophagogastroduodenoscopy (EGD) and colonoscopy in patients who continue to take antithrombotic medications. It focuses on both immediate and delayed bleeding events that may require endoscopic intervention, such as hemostatic clipping. The study aims to define the incidence of bleeding and assess the condition of submucosal arteries in excised specimens when bleeding occurs. By monitoring these outcomes, the study seeks to provide insights into the safety of performing endoscopic procedures in patients on blood thinners.

Who should consider this trial

Good fit: Ideal candidates for this study are patients who are on antithrombotic medications and are scheduled for EGD or colonoscopy.

Not a fit: Patients who undergo prophylactic clipping after biopsy or polypectomy, or those classified as American Society of Anesthesiologists physical status class IV or V, may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could help establish safer guidelines for performing endoscopic procedures in patients taking antithrombotic agents.

How similar studies have performed: While there may be studies on bleeding rates in endoscopy, this specific focus on patients continuing antithrombotic therapy is less common, making it a novel approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Inclusion criteria is all patients who continue to take antithrombotic drugs and undergo EGD or colonoscopy

Exclusion Criteria:

* Patients who take prophylactic clipping after biopsy or polypectomy American Society of Anesthesiologists physical status of class IV or V

Where this trial is running

Komagane

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Bleeding After GI Endoscopy
Last reviewed 2026-06-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.