Association of gastrointestinal bleeding from vascular lesions with platelet aggregation activity and a loss of high-molecular-weight multimers of von Willebrand factor

Association of gastrointestinal bleeding from vascular lesions with platelet aggregation activity and a loss of high-molecular-weight multimers of von Willebrand factor - VAPA study

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000048252

Enrollment

200

Registered

2022-07-03

Start date

2022-07-03

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

Gastrointestinal hemorrhagic vascular disease and small bowel bleeding

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Ppatients who undergo enteroscopy due to suspected small bowel diseases 2) Patients with gastrointestinal vascular disease who undergo endoscopy

Exclusion criteria

Exclusion criteria: Patients who do not provide informed consent

Design outcomes

Primary

Measure	Time frame
Platelet aggregation and von Willebrand multimer in patients with gaastrointestinal hemorrhagic vascular diseases	—

Secondary

Measure	Time frame
Atherosclerosis in patients with gaastrointestinal hemorrhagic vascular diseases	—

Countries

Japan

Contacts

Public ContactNaoki Ohmiya

Fujita Health University Department of Advanced Endoscopy

nohmiya@fujita-hu.ac.jp0562939240

Outcome results