Engineers at Southern Federal University (SFedU) have developed a wearable device designed to warn of an approaching heart attack by analysing the condition of people with heart disease in real time and automatically sending an SOS signal in critical situations, addressing the challenge that cardiac arrest or heart attack often occurs suddenly and when patients are alone, as specialists from the university’s Advanced Engineering School created a physical-activity cardiac recorder—a portable hardware-and-software system that detects deviations from an individual’s normal physiological state—according to SFedU’s press service, with Sergey Sinyutin, head of the Department of Embedded and Radio Receiver Systems, explaining that the device, which resembles a compact fitness tracker, continuously records physiological indicators and transmits them to a smartphone via Bluetooth, where a dedicated mobile application performs initial data analysis and provides feedback on whether a user should continue exercising, slow down or take a break, while the system combines Holter monitoring for detailed ECG recording, telemetry for continuous data transmission and a personal tracker capable of real-time analysis, synchronously comparing cardiovascular parameters such as heart rate and heart rate variability with movement data from accelerometry to detect early signs of functional changes before a disruption occurs, automatically sending an SOS alert with geolocation to relatives in emergencies and transmitting all data to secure cloud storage that can be accessed by attending physicians for remote monitoring and rehabilitation adjustments.

