Apple Watch detects heart irregularity with 97 percent accuracy

An Apple Watch app can detect a common form of heart irregularity with 97 percent accuracy, according to results presented at the Heart Rhythm Society last week. This is promising because people with the heart condition — called atrial fibrillation — often have no symptoms, making screening and diagnosis difficult.Cardiogram — a heart rate monitoring app used with the Apple Watch — worked with the University of California, San Francisco on its Health eHeart Study. From Ma