AF has become the most prevalent cardiac arrhythmia in the world. Most clinical statisticians believe that over 2 million people in the United states and over 4 million people in Europe have AF, many of whom have not yet been diagnosed. Patients are particularly vulnerable to the condition in the five days following cardiac surgery. It is during this time period, where AF could be treated prophylactically but typically isn’t because clinicians lack a tool for predicting it, when intervention could make a difference to clinical outcome.

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