Samsung Electronics and Chung-Ang University (through its Gwangmyeong Hospital) report that a clinical study using the Galaxy Watch can warn users before vasovagal syncope episodes. Samsung says the work relies on biosignal analysis from a Galaxy Watch to identify physiological changes associated with fainting caused by a sudden drop in blood pressure, often triggered by stress or tension. The companies describe the results as a first-of-its-kind study using a commercial smartwatch for this purpose. The research appears in the European Heart Journal – Digital Health, a peer-reviewed journal of the European Society of Cardiology. In the study, researchers led by Cho Jun-hwan enrolled 132 patients with suspected vasovagal syncope and evaluated the watch during a head-up tilt test, a standard method used to provoke and study syncope. Digital Trends adds that the system can flag an oncoming episode up to about five minutes in advance, with an accuracy reported at 84.6%. Across outlets, the findings focus on early prediction of fainting to help reduce the risk of falls and related injuries during an episode.