Hidden heart rhythm disorder may be behind many unexplained strokes

This study looks at people who had a stroke or mini-stroke with no known cause (cryptogenic stroke). Researchers want to see if a small device implanted under the skin, called an implantable loop recorder, can detect hidden atrial fibrillation — an irregular heart rhythm that can cause strokes — over two years. The goal is to understand how often atrial fibrillation occurs in these patients and whether it leads to changes in treatment.