NIPH Clinical Trials Search

UMIN ID: UMIN000001569

Registered date:05/01/2009

A multicenter study on warfarin use and optimal anticoagulation levels for prevention of cardiogenic embolism in Japanese patients with atrial fibrillation: J-RHYTHM Registry

Basic Information

Recruitment status Complete: follow-up complete
Health condition(s) or Problem(s) studiedatrial fibrillation
Date of first enrollment2009/01/01
Target sample size6000
Countries of recruitmentJapan
Study typeObservational


Primary OutcomeInvestigation of clinical background at the development of following clinical event; symptomatic cerebral infarction, systemic embolism, major bleeding, all cause of death Optimal PT-INR for Japanese patients with atrial fibrillation
Secondary OutcomePreventive effects of various medications including warfarin, antithrombotics drugs and others for the treatment of Japanese patients with atrial fibrillation

Key inclusion & exclusion criteria

Age minimumNot applicable
Age maximumNot applicable
GenderMale and Female
Include criteriaall patient with atrial fibrillation accepted the informal consent
Exclude criteriainadequate patients judged by their physician

Related Information


public contact
Name Hirotsugu Atarashi
Address 1-7-1 Nagayama Tama-shi, Tokyo Japan
Telephone 042-371-2111
Affiliation Nippon Medical School Tama-Nagayama Hospital Internal Medicine
scientific contact
Name Hiroshi Inoue
Address 2630 Sugitani Toyama-shi, Toyama Japan
Telephone 076-434-2281
Affiliation University of Toyama Second Department of Internal Medicine