Medical Xpress February 27, 2025
A machine learning algorithm running on a smartwatch demonstrated the ability to detect sudden loss of pulse with high specificity (99.99%) and moderate sensitivity (67.23%), according to a study led by Google Research. Designed to identify cardiac arrest events, the system can automatically place an emergency call when it senses an event has occurred, even if the user is unresponsive.
Out-of-hospital cardiac arrest (OHCA) is a significant cause of sudden cardiac death, with survival rates highly dependent on immediate recognition and intervention. Approximately 50–75% of OHCA cases are unwitnessed, reducing the likelihood of immediate medical response and resuscitation. Researchers evaluated whether a smartwatch could autonomously detect pulseless events and contact emergency services while minimizing false alarms.
In the study, “Automated...
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