University Health Network Launches Apple Watch Heart Failure Study That Uses Blood Oxygen App

The University Health Network today announced the launch of a new study that will aim to find out how the Apple Watch can help with the early identification of heart failure progression.

apple watch series 6 blood oxygen monitoring 1
Cardiologist Dr. Heather Ross is teaming up with Apple to compare data collected by the Apple Watch to data routinely collected from the physical tests heart failure patients undergo. The study will determine whether the health sensors and features in the Apple Watch, including the Blood Oxygen app and mobility metrics, can provide early warning signs, and whether patients can perform traditionally clinic-based assessments in their own homes.

Patients from the Peter Munk Cardiac Centre will be asked to participate in a three month active monitoring study, with each patient using an iPhone and an Apple Watch Series 6, which is the Apple Watch model that offers the Blood Oxygen app.

Apple's vice president of Health, Sumbul Desai, said that studies like this and heart health insights have an important role in the evolution of the Apple Watch.

"Surfacing heart health insights has played a key role in the evolution of Apple Watch and we're continually humbled by the responses we hear from users on the impact it has had on their lives," says Dr. Sumbul Desai, Apple's vice president of Health. "We're thrilled to be collaborating with UHN and Dr. Heather Ross to better understand how the powerful sensors in Apple Watch can potentially help patients better manage heart failure, from the comfort of their own home."

Dr. Ross, who is leading the study, said that she believes that biometric data from the Apple Watch "may provide comparable, precise, and accurate measurements of fitness, prognostic markers and early warning signals, compared to traditional diagnostics."

The Apple Watch has been the subject of multiple heart-related studies in the past, including a study Apple did in partnership with Stanford Medicine to determine whether the Apple Watch can detect atrial fibrillation.

The study determined that the Apple Watch can indeed detect irregular heart rhythms, and the Apple Watch has a built-in feature in many countries that allows it to alert wearers when an abnormal heart rhythm is detected. Other Apple Watch-related studies are under way, focusing on asthma, heart failure, early detection of COVID-19, and cognitive decline.

Related Roundup: Apple Watch 10
Buyer's Guide: Apple Watch (Neutral)

Popular Stories

Apple iPhone 16e Feature

Apple Announces iPhone 16e With A18 Chip and Apple Intelligence, Pricing Starts at $599

Wednesday February 19, 2025 8:02 am PST by
Apple today introduced the iPhone 16e, its newest entry-level smartphone. The device succeeds the third-generation iPhone SE, which has now been discontinued. The iPhone 16e features a larger 6.1-inch OLED display, up from a 4.7-inch LCD on the iPhone SE. The display has a notch for Face ID, and this means that Apple no longer sells any iPhones with a Touch ID fingerprint button, marking the ...
iphone 17 pro asherdipps

iPhone 17 Pro Models Rumored to Feature Aluminum Frame Instead of Titanium Frame

Tuesday February 18, 2025 12:02 pm PST by
Over the years, Apple has switched from an aluminum frame to a stainless steel frame to a titanium frame for its highest-end iPhones. And now, it has been rumored that Apple will go back to using aluminum for three out of four iPhone 17 models. In an investor note with research firm GF Securities, obtained by MacRumors this week, Apple supply chain analyst Jeff Pu said the iPhone 17, iPhone...
apple launch feb 2025 alt

Here Are the New Apple Products We're Still Expecting This Spring

Thursday February 20, 2025 5:06 am PST by
Now that Apple has announced its new more affordable iPhone 16e, our thoughts turn to what else we are expecting from the company this spring. There are three product categories that we are definitely expecting to get upgraded before spring has ended. Keep reading to learn what they are. If we're lucky, Apple might make a surprise announcement about a completely new product category. M4...
Generic iOS 18

Here's When Apple Will Release iOS 18.4

Wednesday February 19, 2025 11:38 am PST by
Following the launch of the iPhone 16e, Apple updated its iOS 18, iPadOS 18, and macOS Sequoia pages to give a narrower timeline on when the next updates are set to launch. All three pages now state that new Apple Intelligence features and languages will launch in early April, an update from the more broader April timeframe that Apple provided before. The next major point updates will be iOS ...
prioritize notifications ios 18 4

Everything New in iOS 18.4 Beta 1

Friday February 21, 2025 1:08 pm PST by
Apple finally released the first beta of iOS 18.4 to developers for testing purposes, and while the beta is lacking some of the Apple Intelligence features we were hoping for, there are some notable new additions. Subscribe to the MacRumors YouTube channel for more videos. Priority Notifications - Apple Intelligence There is a new Priority Notifications feature that can show you your most...
apple launch feb 2025

Tim Cook Teases an 'Apple Launch' Next Wednesday

Thursday February 13, 2025 8:07 am PST by
In a social media post today, Apple CEO Tim Cook teased an upcoming "launch" of some kind scheduled for Wednesday, February 19. "Get ready to meet the newest member of the family," he said, with an #AppleLaunch hashtag. The post includes a short video with an animated Apple logo inside a circle. Cook did not provide an exact time for the launch, or share any other specific details, so...
iPhone 16e Feature

Apple Denies Speculation Surrounding iPhone 16e's Lack of MagSafe

Friday February 21, 2025 8:01 am PST by
Apple has confirmed that its custom-designed C1 modem in the iPhone 16e has nothing to do with the device's lack of MagSafe support, according to Macworld. Following the launch of the iPhone 16e, there was some speculation online about how MagSafe magnets might have interfered with the C1 modem's cellular connectivity performance, and this was considered to be a potential reason for the...
ios 18 4 ambient music

iOS 18.4 Adds New Ambient Music Feature

Friday February 21, 2025 11:06 am PST by
In iOS 18.4, there's a new Ambient Music option that can be added to Control Center. There are four different sound categories, including Sleep, Chill, Productivity, and Wellbeing. Each category can be added to Control Center separately, and tapping one plays a random selection of sounds or music from that particular category. You can't choose what's playing from Control Center, but if...

Top Rated Comments

shinyleaf Avatar
52 months ago

I don’t think I have heard of any studies using Healthkit / Apple Watch available outside the US. Am I wrong?
You’re reading about one.

“University Health Network” and the Peter Munk cardiac center are in Toronto, Canada.

UHN is a group of hospitals in Toronto. The “University” in the name is not as in a school. It’s referring to that a bunch of the hospitals in the network is on a street named “University Avenue”.
Score: 5 Votes (Like | Disagree)
alexandr Avatar
52 months ago
very interested to see what they will find. early detection of a heart condition is one of the best things you can give yourself.
Score: 5 Votes (Like | Disagree)
wigby Avatar
52 months ago

you're not wrong on this. I'm hoping these projects get to expand outside of the USA ... collective knowledge is that of the science industry - it's not a gain for political stance. Maybe Apple still has a solid and strong relationship with universities in the USA still.

Maybe there is something with international law maybe preventing Apple from expanding Healthkit research?
Apple has more influence and trust from US health authorities. Each country have their own set of criteria and standards so trying to conform to all of those at once is an impossibility and would take decades to undergo. Science works by establishing a theory in practice and building upon that. Once American scientists and doctors can prove the viability of a study, it would be quickly adopted by all other countries willing to adjust their criteria to match that of Apple’s. It’s not too different from the international supply chain that Apple has established for their own products except that one works in reverse.
Score: 3 Votes (Like | Disagree)
Edge100 Avatar
52 months ago

you're not wrong on this. I'm hoping these projects get to expand outside of the USA ... collective knowledge is that of the science industry - it's not a gain for political stance. Maybe Apple still has a solid and strong relationship with universities in the USA still.

Maybe there is something with international law maybe preventing Apple from expanding Healthkit research?
This one is in Canada, so there’s that.
Score: 2 Votes (Like | Disagree)
kyjaotkb Avatar
52 months ago
I don’t think I have heard of any studies using Healthkit / Apple Watch available outside the US. Am I wrong?
Score: 1 Votes (Like | Disagree)
DeepIn2U Avatar
52 months ago

I don’t think I have heard of any studies using Healthkit / Apple Watch available outside the US. Am I wrong?
you're not wrong on this. I'm hoping these projects get to expand outside of the USA ... collective knowledge is that of the science industry - it's not a gain for political stance. Maybe Apple still has a solid and strong relationship with universities in the USA still.

Maybe there is something with international law maybe preventing Apple from expanding Healthkit research?
Score: 1 Votes (Like | Disagree)