Interactive Tool: What Is Your Risk for a Stroke if You Have Atrial Fibrillation?

This interactive tool measures the chance of having a Reference stroke Opens New Window in the next 5 years, for people who are age 55 or older and have Reference atrial fibrillation Opens New Window. To calculate your score, the tool uses the information you enter.

This tool is based on information from the Framingham Heart Study. Since 1948 the Framingham Heart Study has studied the progression of heart disease and its risk factors. The data from this study has been used to make a risk assessment.

You should be aware, though, that the tool cannot be applied to everyone. This tool does not work for people who:

• Have Reference mitral valve stenosis Opens New Window or significant left ventricular dysfunction, which interferes with the heart's ability to pump well.
• Are already taking an anticoagulant such as warfarin (Coumadin). Anticoagulants, also called blood thinners, prevent clots from forming and greatly lower the risk of stroke.
• Have had a stroke or transient ischemic attack within 30 days of developing atrial fibrillation. If so, you are already at high risk, and this tool will not work for you.

The values you enter include the most important risk factors for stroke. They are:

• Age and gender. The risk of stroke increases with age. The risk doubles every decade after age 55. Also, among those with atrial fibrillation, women have a higher risk of stroke than men.
• Systolic blood pressure. Systolic blood pressure is the first number of your blood pressure reading. For example, if your reading is 120/80 (120 over 80), your systolic blood pressure is 120 millimeters of mercury (mm Hg).
• Diabetes. Having diabetes increases your risk of stroke. You can help lower this risk by working with your doctor to keep your blood sugar levels in a target range.
• Prior stroke or transient ischemic attack (TIA). If you have had a stroke or a transient ischemic attack (TIA) within 30 days of developing atrial fibrillation, you are already at high risk, and this tool will not work for you. But if you had a prior stroke or TIA before you developed atrial fibrillation, this tool will work for you.

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This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Reference Terms of Use. Reference How this information was developed to help you make better health decisions.