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CTOnews.com Medical researchers around the world continue to discover new ways Apple Watch can help save lives. A new study by Mayo Clinic researchers takes a deeper look at the Apple Watch's ECG function, focusing on detecting cardiac abnormalities such as left ventricular dysfunction.

This is an important study because dysfunction of the left ventricle of the heart usually leads to congestive heart failure, which can lead to a variety of heart diseases. The left ventricle is primarily responsible for pumping oxygen to vital organs of the body. Therefore, it is important to diagnose any problems with the left ventricle as early as possible.

Heart dysfunction is often difficult to diagnose because it is asymptomatic, meaning people with the condition don't know they have it, the Mayo Clinic said. If something like the Apple Watch could passively detect it or help diagnose it, it would be a major breakthrough.

Although artificial intelligence (AI) algorithms are able to identify cardiac dysfunction from a 12-lead electrocardiogram (ECG), defined as an ejection fraction (EF) ≤40%, identifying cardiac dysfunction using a smartwatch's single-lead ECG has not been tested.

This is a groundbreaking study because the researchers used the Apple Watch's single-lead ECG feature to collect data and process it to identify left ventricular dysfunction.

Researchers digitally recruited 2454 patients from 46 U.S. states and 11 other countries who sent 125,610 ECGs to the data platform with Apple Watch between August 2021 and February 2022. These ECG data are refreshed and processed by proprietary AI algorithms developed by the researchers.

The study found that artificial intelligence algorithms were able to detect patients with low EF (ejection fraction) from these ECGs. These findings suggest that smartwatch ECGs obtained in nonclinical settings can identify patients with cardiac insufficiency, a potentially life-threatening, often asymptomatic condition.

CTOnews.com understands that the results and findings of this groundbreaking clinical study were published this week in Nature Medicine.

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