Stanford University Study: Apple Watch Reliable in Diagnosing Users' Heart Conditions

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Ngày cập nhật gần nhất: 15/4/2026

A study conducted by Stanford University concludes that data collected by the Apple Watch can provide detailed and reliable clinical information about patients with heart conditions.

Occasionally, you might come across stories like how the Apple Watch helped save someone's life; and the Apple Watch itself has long been highly regarded for this. Apple's wearable device can perform an electrocardiogram (ECG) and detect adverse heart conditions such as atrial fibrillation (AFib),... Although Apple always advises that the data provided by the watch to users is for reference only and should always be confirmed by medical-grade devices or physicians, researchers from Stanford University have concluded that we can consider the Apple Watch as a reliable solution for detecting cardiac issues.

Study titled “Activity Data from Wearable Devices as Indicators of Cardiac Activity in Patients”. In this study, 110 participants used Apple Watch Series 3 and iPhone 7 to continuously run the VascTrac app at home for 6 months. All of them had undergone cardiac procedures and surgeries. They had to perform the 6MWT (6-minute walk test) weekly at home through the aforementioned app, and the data from their activities would be collected. Subsequently, researchers would reassess the effectiveness of wearing the Apple Watch based on this data.

After analyzing the data extracted from the Apple Watch post-study completion, they stated that this data could accurately predict the clinical performance of the 6MWT impacting participants. It helps detect cardiac-related mobility impairments and remotely monitors the functions and assessments of these patients. Additionally, the Apple Watch also facilitates easier and quicker diagnosis. The sensitivity of this data reaches 90% compared to the results of 6MWT performed in clinics, even though patients were only monitored at home. This is highly significant, especially in the context of the pandemic where people (in other countries) find it difficult to visit healthcare facilities for medical consultations.

According to Pocketnow

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