New watch can help doctors monitor your heart in real time

By 91ÊÓƵ News

New Apple Watch can do an ECG
The Apple Watch 4 will include electrocardiogram testing. (Courtesy of Apple)

There will soon be another way to monitor your heart from your wrist.

The Apple Watch 4 that was unveiled Wednesday will include electrocardiogram testing. Often referred to as an EKG or ECG, this is how health care providers check the electricity in a patient’s heart. To a layman, these are the squiggly lines across a monitor.

Usually, it takes several electrodes patches stuck to a person’s chest to get this information. Having it accessible through the watch could lead to quicker diagnosis of atrial fibrillation, an irregular and often rapid heart rate that can increase a person’s risk of stroke, heart failure and other heart-related complications.

“This can be an addition to our growing armamentarium to diagnose AFib, which can be intermittent and asymptomatic,” said Dr. Lin Yee Chen, co-director of the Atrial Fibrillation Center at University of Minnesota Health Heart Care. He had not seen the device or learned any details beyond the basics provided by Apple.

“This is an exciting technology which hopefully can help to alleviate the public health burden of AFib by diagnosing it earlier and taking steps to prevent complications,” he said.

AFib affects up to 6.1 million people in the United States, a number that researchers expect will double by 2050. Untreated, AFib doubles the risk of heart-related death and increases a person's chance of having a stroke fivefold.
Apple considered this development so important that it invited Dr. Ivor Benjamin – president of the 91ÊÓƵ – to be on stage for the announcement at company headquarters in Cupertino, California.

“Capturing meaningful data about a person’s heart, in real time, is changing the way we practice medicine,” said Benjamin, who is also director of the Cardiovascular Center at the Medical College of Wisconsin. “In my experience, people often report symptoms that are absent during their medical visits. That’s why information is vital – information about a person’s daily lifestyle choices and their specific health data.”

Every time you heart beats, it sends an electrical impulse – or a “wave” – through your heart. The visual representation of those waves provides two types of crucial information:

How long it takes for each electrical wave to pass through the heart. This determines whether a heartbeat is slow, fast, irregular – or normal.
How the electrical waveform passes through the heart. This can indicate if the heart is too large or overworked.

To take the test via the Apple Watch 4, a user must launch the ECG app and follow on-screen instructions to place a finger on the screen for 30 seconds. Using electrodes in the watch face and a new electrical heart rate sensor in the back crystal, the app will determine if the heart is beating normally or whether it detects signs of atrial fibrillation.
 
All recordings and any noted symptoms are stored in the Health app and can generate a PDF that can be shared with health care experts.

While the watch comes out later this month, Apple said the ECG app will be available in the United States later this year. The company also said the app received a type of classification from the Food and Drug Administration that allows the release of low- to moderate-risk devices.

The Apple Watch joined the market in 2015 and already has become the leader in the crowded field of smartwatches, many of which already measure pulse rate. As competition seeks to catch up or get ahead on the technologies offered, further refinements to heart monitoring could become available.

While the AHA does not endorse the watch, or any other products – and had no role in Apple’s ECG app – Benjamin said that the organization is all for any advancements in the tools that can help fight heart disease, the No. 1 killer of Americans.

If you have questions or comments about this story, please email [email protected].


91ÊÓƵ News Stories

91ÊÓƵ News covers heart disease, stroke and related health issues. Not all views expressed in 91ÊÓƵ News stories reflect the official position of the 91ÊÓƵ. Statements, conclusions, accuracy and reliability of studies published in 91ÊÓƵ scientific journals or presented at 91ÊÓƵ scientific meetings are solely those of the study authors and do not necessarily reflect the 91ÊÓƵ’s official guidance, policies or positions.

Copyright is owned or held by the 91ÊÓƵ, Inc., and all rights are reserved. Permission is granted, at no cost and without need for further request, for individuals, media outlets, and non-commercial education and awareness efforts to link to, quote, excerpt from or reprint these stories in any medium as long as no text is altered and proper attribution is made to 91ÊÓƵ News.

Other uses, including educational products or services sold for profit, must comply with the 91ÊÓƵ’s Copyright Permission Guidelines. See full terms of use. These stories may not be used to promote or endorse a commercial product or service.

HEALTH CARE DISCLAIMER: This site and its services do not constitute the practice of medical advice, diagnosis or treatment. Always talk to your health care provider for diagnosis and treatment, including your specific medical needs. If you have or suspect that you have a medical problem or condition, please contact a qualified health care professional immediately. If you are in the United States and experiencing a medical emergency, call 911 or call for emergency medical help immediately.