jay_udell

My colleagues at UHN, Chris (@CmcintoshAi) and Dr. Heather Ross, just published in @NatureMedicine — and it's worth paying attention to. pVO₂ — peak oxygen uptake — is the gold standard for gauging heart failure severity. But measuring it requires a treadmill and a hospital. Their AI model trained on Apple Watch data can estimate pVO₂ continuously, from daily life. The clinical hook: a 10% drop in wearable-estimated pVO₂ predicted unplanned hospitalizations with >3x elevated risk — caught roughly a week before the event. That's not a fitness tracker. That's an early warning system for decompensation, worn on your wrist. Ambient, passive, continuous — the kind of longitudinal signal you simply can't get from clinic visits. Proud to be at @UHN where this kind of work happens Congratulations 🎉 @bradwouters @PMunkCardiacCtr