Detection of subclinical atrial fibrillation in cryptogenic and embolic stroke of undetermined source The use of long-term monitoring dramatically improved the ability to detect short, rare, and asymptomatic AF periods in stroke patients. The EMBRACE study evaluated 572 patients with ischemic stroke in the last 6 months, with no AF diagnosis, with randomization for 30-day continuous monitoring (287 patients) vs. 24-hour Holter (285 patients). The AF detection rates (> 30 seconds) were 16.1% in the long-term monitoring group vs. 3.2% […]