The Effect and Safety of Different Intensity Anticoagulation Therapy in Elderly Patients With Non-valvular Atrial Fibrillation

Completed

Phase 4 Results N/A

Eligibility Criteria

Inclusion Criteria

1. Clinical diagnosis of atrial fibrillation
2. Echocardiography confirmed a non-valvular heart disease
3. Ageā‰„75 years

Exclusion Criteria

1. Unable to cooperate with doctors
2. Life expectancy of less than 1 year
3. Rheumatic heart disease or dilated cardiomyopathy
4. History of artificial valve replacement surgery
5. Infectious endocarditis
6. Stroke or transient ischemic attack(TIA) within the last 6 months
7. Previous history of intracranial hemorrhage, gastrointestinal, respiratory or urogenital bleeding
8. Previous intolerance/allergy to warfarin or aspirin
9. Blood pressure greater than 180/110 mmHg
10. Chronic liver dysfunction, alanine aminotransferase above the normal reference value of the upper limit 3 times
11. Chronic renal failure, serum creatinine clearance rate (Ccr) less than 30 ml / min
12. Patient was receiving antiplatelet or anticoagulant therapy due to other reasons