Stern et al used a flow diagram to help guide the anticoagulation therapy of a patient with chronic atrial fibrillation. The authors are from the University of Chicago.
Patient selection: adult with chronic atrial fibrillation
Significant risk factors:
(1) valvular heart disease
(2) history of prior cerebrovascular accident (CVA) or transient ischemic attack (TIA)
(3) congestive heart failure with ejection fraction < 25%
(4) hypertension
(5) age < 75 years of age
Number of Significant Risk Factors
Diabetes Mellitus
Stroke Risk
Therapy
>= 1
NA
high
warfarin
0
Yes
warfarin or aspirin
0
No
low
aspirin
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