Apple Watch Able to Detect Abnormal Heart Rhythm With 97% Accuracy
The Apple Watch's built-in heart rate monitor is 97 percent accurate when detecting the most common form of an abnormal heart rhythm when paired with an algorithm to sort through the data, according to a new study conducted by the University of California, San Francisco and the team behind the Cardiogram app (via TechCrunch).
There were 6,158 participants in the study, all of whom used the Cardiogram app on the Apple Watch to monitor their heart rate. Most were known to have normal EKG readings, but 200 suffer from paroxysmal atrial fibrillation (an occasional irregular heartbeat).
Data from these participants, along with data taken from normal Cardiogram users, was used to build a neural network that could recognize the abnormal heart rhythms solely from data collected by the Apple Watch. As of today, Cardiogram says its algorithm can almost always successfully determine when a patient is in atrial fibrillation.
In order to validate the model, we obtained gold-standard labels of atrial fibrillation from cardioversions. In a cardioversion, a patient experiencing atrial fibrillation is converted back to normal sinus rhythm, either chemically or with a shock to the heart. 51 patients at UCSF agreed to wear an Apple Watch during their cardioversion.
We obtained heart rate samples before the procedure, when the patient was in atrial fibrillation, and after, when patient's heart was restored to a normal rhythm. On this validation set, our model performed with an AUC of 0.97, beating existing methods.
Cardiogram is a startup that's aiming to garner more information from the data collected by the Apple Watch. The study, which Cardiogram has raised funding for, started in March of 2016 and will continue as UCSF and Cardiogram work to refine the neural network and detect other conditions beyond atrial fibrillation.
Cardiogram plans to put in additional work before using its algorithm to start notifying Cardiogram users of arrhythmias. The company needs to conduct further testing to make sure the algorithm works in a variety of conditions and it needs to work on scaling it so it can be used continuously by all Cardiogram users.
The Cardiogram app can be downloaded from the App Store for free. [Direct Link]
Popular Stories
Apple is set to unveil iOS 18 during its WWDC keynote on June 10, so the software update is a little over six weeks away from being announced. Below, we recap rumored features and changes planned for the iPhone with iOS 18. iOS 18 will reportedly be the "biggest" update in the iPhone's history, with new ChatGPT-inspired generative AI features, a more customizable Home Screen, and much more....
Apple today released several open source large language models (LLMs) that are designed to run on-device rather than through cloud servers. Called OpenELM (Open-source Efficient Language Models), the LLMs are available on the Hugging Face Hub, a community for sharing AI code. As outlined in a white paper [PDF], there are eight total OpenELM models, four of which were pre-trained using the...
Apple has announced it will be holding a special event on Tuesday, May 7 at 7 a.m. Pacific Time (10 a.m. Eastern Time), with a live stream to be available on Apple.com and on YouTube as usual. The event invitation has a tagline of "Let Loose" and shows an artistic render of an Apple Pencil, suggesting that iPads will be a focus of the event. Subscribe to the MacRumors YouTube channel for more ...
Best Buy is discounting a collection of M3 MacBook Pro computers today, this time focusing on the 14-inch version of the laptop. Every deal in this sale requires you to have a My Best Buy Plus or Total membership, although non-members can still get solid second-best prices on these MacBook Pro models. Note: MacRumors is an affiliate partner with Best Buy. When you click a link and make a...
There are widespread reports of Apple users being locked out of their Apple ID overnight for no apparent reason, requiring a password reset before they can log in again. Users say the sudden inexplicable Apple ID sign-out is occurring across multiple devices. When they attempt to sign in again they are locked out of their account and asked to reset their password in order to regain access. ...
Apple used to regularly increase the base memory of its Macs up until 2011, the same year Tim Cook was appointed CEO, charts posted on Mastodon by David Schaub show. Earlier this year, Schaub generated two charts: One showing the base memory capacities of Apple's all-in-one Macs from 1984 onwards, and a second depicting Apple's consumer laptop base RAM from 1999 onwards. Both charts were...
Top Rated Comments
Me: "Call an ambulance"
Siri: "I'm sorry, Dave. I'm afraid I can't do that."
I think a lot of people are waiting on two big things:
1) Really accurate heart-rate monitoring (getting there)
2) Blood sugar analysis for diabetics.
I have a feeling Apple will get there within a decade, fingers crossed.
The Cardiogram app itself is already on the app store (https://itunes.apple.com/us/app/cardiogram/id1000017994?ls=1&mt=8) and the deep learning to screen for conditions are coming sooner than you might think. :)
[doublepost=1494535132][/doublepost] Atrial fibrillation is often asymptomatic—Circulation (the top cardiology journal) just published a big report on the evidence for device-based screening of AF:
circ.ahajournals.org/content/135/19/1851.full?ijkey=StzSPk8eljGaP2G&keytype=ref