Can a Smartwatch Detect HOCM?

According to a limited study recently published in Nature, researchers were able to detect obstructive HCM (HOCM) using a noninvasive optical sensor contained in many commercial smartwatches.

How the Technology Works

These watches used photoplethysmography, a noninvasive optical method used to detect blood volume changes in the microvascular bed at the skin surface.  The same technology is used in clinical pulse oximeters and is now widely incorporated in commercial smartwatches that have heart rate detection.

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Doc With HCM Himself Was Myectomy Pioneer

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Pioneer by Camgee https://openclipart.org/detail/218350/pioneer

This story is fascinating.  Dr. Andrew  Morrow, a cardiac surgeon at the National Institute of Health from 1953 until his death in 1982, was a HCM patient himself. Dr. Morrow was the first surgeon to do myectomy surgery.  According to the article, Dr. Morrow was diagnosed by his colleague, Eugene Braunwald, at approximately the same time he pioneered myectomy surgery.