Skip to content

Assessment of antithrombic agents for endoscopic procedure using biopsy forceps

Assessment of antithrombic agents for endoscopic procedure using biopsy forceps - ASAMA-study

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000004937
Enrollment
1500
Registered
2011-02-01
Start date
2011-02-01
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

patients on anti-thrombotic therapy who need gastrointestinal endoscopy procedure using biopsy forceps.

Interventions

group A:to perform gastric biopsy while continuing antithrombotic agents(warfarin, aspirin, thienopyridine derivatives). group B:to perform gastric biopsy under discontinuation of antithrombotic agen

Sponsors

Shinshu University School of Medicine
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: adult patients who need gastrointestinal endoscopy, and may require endoscopic procedures using biopsy forceps.

Exclusion criteria

Exclusion criteria: 1)without agreement 2)PT-INR>3.0 in warfarin taking patients(within 1 Month before procudere) 3)taking dual antiplatelet therapy(both aspirin and thienopyridine delivatives)(patients under discontinuation of thienopyridine delivatives before biopsy procedure can be enrolled). 4)receiving both anticoagulant and antiplatelet therapy(patients with discontinuation of antiplatelet agents or warfarin before biopsy procedure can be enrolled). 5)taking antiplatelet agents other than aspirin or thienopyridine derivatives. 6)within 12months after drug eluting stent placement. 7)taking warfarin for DVT. 8)other serious conditions, pregnency, overt bleeding tendency.

Design outcomes

Primary

MeasureTime frame
1)the prevalence and severity of gastric bleeding during gastric biopsy, and the prevalence of gastric breeding which requires hemostatic therapy. 2)The prevalence and severity of postoperative gastric bleedig after gastric biopsy, and the prevalence of the breeding which requires hemostatic therapy.

Secondary

MeasureTime frame
1)the prevalence and severity of thromboembolic events.

Countries

Japan

Contacts

Public ContactHiroki Kasai

Shinshu University School of Medicine Department of Cardiovascular Medicine

hkasai@shinshu-u.ac.jp0263-37-3486

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026