TELTOHEART 
 

TeltoHeart is a wearable system combining PPG-based AF detection algorithm for screening of AF together with an instant 6-lead ECG with no wires for rhythm confirmation.

About one-third of AF patients experience asymptomatic episodes, which equally account for serous thromboembolic risk as symptomatic ones and could be undetected if screened only intermittently. The wearable device TeltoHeart provides continuous photoplethysmography (PPG)-based rhythm monitoring, enabling the detection of asymptomatic AF episodes as short as 30 seconds. The capability ensures that even brief, rare and asymptomatic AF episodes are not missed, contributing to early-stage diagnosis and timely intervention.

TeltoHeart offers a highly accurate PPG-based algorithm for continuous AF detection, with a sensitivity of 94.2% and specificity of 96.9% when compared to a control group of not only stable sinus rhythm (SR) but also SR with frequent premature contractions. This level of accuracy is essential for the peace of mind of our patients and correct notification to record ECG for rhythm confirmation.

The number of premature beats per minute is the main factor associated with false positive detections in the real-world use of wearables. The widespread use of common single-lead ECGs recorded by other smartwatches or handheld devices significantly increases the risk of false-positive detection in populations with frequent premature contractions. The use of a distinguished six-lead ECG feature required 3.4 times more premature beats to result in a false positive outcome compared to single-lead ECG. Thus, TeltoHeart is a robust tool able to maintain a high specificity despite the challenge posed by ectopic beats.

TeltoHeart non-invasive and unobtrusive design allows patients to be continuously monitored for AF and related arrhythmias without disrupting their daily activities. This patient-centered approach promotes early detection and management, reducing the risk of complications and promoting self- care and motivation to improve health.

Due to life in rural areas and various socio-economic reasons not every patient has equal access to healthcare services. Wearable technologies like this wrist-worn TeltoHeart have the potential to bridge healthcare gaps in remote areas, enabling access to accurate cardiac monitoring and timely intervention for individuals who may not have easy access to medical facilities.