We are actively engaged in research to create new technology for collecting physiological information, and intelligent algorithms for automated detection of disease conditions. The work described on this page is still under development, and is not be confused with the Cardiio-Heart Rate Monitor + 7 Minute Workout ("Cardiio") app that is currently available on the App Store for non-medical use.

Can we use mobile technologies to prevent strokes?

Atrial fibrillation (AF), the most common heart rhythm disorder, is a leading cause of all strokes. Many of these AF-related strokes are preventable through medication if a timely diagnosis is made. However, because AF often produces vague or no symptoms, AF often goes undetected.

We are developing a new, patent-pending technology, Cardiio RhythmTM, that can detect the presence of AF from optical signals collected using a smartphone camera, or wearable devices that use photoplethysmography (PPG). Cardiio RhythmTM uses a machine learning approach to identify the signature pattern of AF and distinguish it from other heart rhythms. We are collaborating with clinicians from Massachusetts General Hospital, Hong Kong University, and Chinese University of Hong Kong to validate the performance of this technology. Some of our published results are listed below.

Scientific Publications

Clinical Validation of Cardiio RhythmTM Technology for Detecting Atrial Fibrillation

Validation of a Novel Contact-free Atrial Fibrillation Screening Method Using an Iphone Camera to Detect Facial Pulsatile Photoplethysmographic Signals
Circulation 134.Suppl 1 (2016)
Authors: Yan, B.P., Chan, S., Lai, W.H., Lau, B.H., Lam, E.K., Yip, A.K., Tai, N.L., Ng, O.C., Chan, H.L., Poh, Y.C. and Poh, M.Z.
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Diagnostic Performance Of A Smartphone-Based Photoplethysmographic Application For Atrial Fibrillation Screening In A Primary Care Setting.
Journal of the American Heart Association 5(7), p.e003428 (2016)
Authors: Chan, P.H., Wong, C.K., Poh, Y.C., Pun, L., Leung, W.W.C., Wong, Y.F., Wong, M.M.Y., Poh, M.Z., Chu, D.W.S. and Siu, C.W.
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Head-To-Head Comparison Of A Camera-Based Smartphone Application Cardiio Rhythm With Alivecor Heart Monitor For Atrial Fibrillation Screening In Primary Healthcare Setting
Journal of the American College of Cardiology 67.13_S (2016)
Authors: Siu, D., Wong, C. K., Chan, P. H., Poh, Y. K., & Poh, M. Z.
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Diagnostic Accuracy of a Novel Mobile Application (Cardiio Rhythm) for Detecting Atrial Fibrillation
Journal of the American College of Cardiology 65.10_S (2015)
Authors: Vaid, J., Poh, M. Z., Saleh, A., Kalantarian, S., Poh, Y. K. C., Rafael, A., & Ruskin, J.
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