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A smartwatch app that has been found to accurately detect atrial fibrillation

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Atrial fibrillation (AFib) was first identified by a smartwatch application as a sign of cardiac rhythmic dysfunction in a study presented at the 71st Annual Science of the American College of Cardiology and was followed up by clinicians. Confirmed in almost 94% of people. session.

With over 2.8 million participants, this study is the largest study to date demonstrating how wearable consumer technology can be used to screen for heart problems during daily activities. Researchers also used the app to screen a subset of participants for obstructive sleep apnea, and those who were flagged for possible sleep apnea were more likely than those who weren’t. We found that we were 1.5 times more likely to develop atrial fibrillation. This shows that suitable tools for detecting two conditions can work synergistically to further enhance health monitoring.

“With digital technology, AFib and its Risk factor In addition to improving the prevention of atrial fibrillation and its complications, Dr. Guo Feng, a professor of internal medicine and lead author of the study at the PLA Medical School and PLA General Hospital in Beijing, said: I am saying. In difficult situations of AFib screening, especially the COVID-19 pandemic, this study provides solutions that may help people identify possible signs of AFib and receive early diagnosis and treatment. increase. “

AFib is the most common type of cardiac rhythmic disorder, with symptoms including episodes of lightheadedness, chest pain, and shortness of breath, as well as rapid or irregular heartbeats. People with atrial fibrillation are about five times more likely to have a stroke than the average person because irregular heartbeats can cause blood to collect and coagulate.However, this risk is Early diagnosis And treatment.

In this survey conducted in China, Smart device When Clinical data To examine the accuracy of AFib screening using photopretismography, an optical-based method for monitoring blood flow used in many wearable devices. Researchers have tracked more than 2.8 million people who have downloaded the AFib screening app to compatible Huawei smart devices (a popular consumer electronics brand in China). The smart device uses photopretismography to monitor the wearer’s pulse, and the app applies an algorithm to detect the arrhythmia. If an abnormal rhythm is detected, the clinician will contact the wearer and make an appointment for a clinical evaluation.

During the four years (2018-2021), 12,244 users received notifications of suspicion of AFib. Of the 5,227 patients who chose follow-up by the clinician, AFib was identified in 93.8% of patients using standard AFib diagnostic tools such as clinical evaluation, electrocardiogram, and 24-hour halter monitoring. About their normal activities, including sleep.

Photopretismography can also be used to detect the physiological changes that occur during obstructive sleep apnea, a condition that interferes with breathing during sleep. Previous studies have suggested that about half of AFib patients also have sleep apnea. In this study, 961,931 app users screened for AFib were also screened for signs of sleep apnea. Of these, about 18,000 were informed that they could be in this condition. The results also showed that this group had a higher rate of AFib diagnosis, and those who were flagged for sleep apnea were 1.5 times more likely to have AFib diagnosis than those who did not.

“This consumer-led AFib screening approach increases the risk of detecting AFib episodes that are prevalent over time. Obstructive sleep apnea Guo said, “Other risk factors that make AFib more sensitive” and “Smart” technology to help manage AFib and AFib sensitive risk factors and assess related attitudes and concerns. Future research will be needed to move forward for use. This digital health tool. “

Although this study used Huawei devices, more common devices in the United States, such as the Apple Watch and FitBit, have similar photopretismography techniques that can be used to measure a person’s pulse and detect anomalies. I have.

One limitation of this study is that only 53.3% of those who received notification of suspicion of AFib effectively followed up with the clinician for further evaluation. Researchers were unable to determine if the remaining individuals had clinically confirmed atrial fibrillation or why they did not follow up for a health assessment.


The risk of firefighter arrhythmia is related to the number of fire exposures in the workplace


For more information:
Yutao Guo et al, Consumer-led Screening for Atrial Fibrillation: American College of Cardiology 71st Annual Science Session, April 3, 2022, Report from the mAFA-II Trial Long-Term Extension Cohort

Quote: The smartwatch app (April 4, 2022) that was found to accurately detect atrial fibrillation is https: //medicalxpress.com/news/2022-04-smartwatch-app-accurately-atrial-fiberlation. Obtained from html on April 4, 2022

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A smartwatch app that has been found to accurately detect atrial fibrillation

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