Table 86135.

Risk Factors for Ischemic Stroke and Systemic Embolism in Patients With Nonvalvular Atrial Fibrillation

Risk Factors (Control Groups)Relative Risk
TIA indicates transient ischemic attack. Relative risk refers to comparison with atrial fibrillation patients without these risk factors. As a group, patients with nonvalvular atrial fibrillation have about a 6-fold increased risk of thromboembolism compared with patients in normal sinus rhythm. Data from collaborative analysis of five primary prevention trials (75).
Previous stroke or TIA2.5
History of hypertension1.6
Congestive heart failure1.4
Advanced age (continuous, per decade)1.4
Diabetes mellitus1.7
Coronary artery disease1.5