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 criteria
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