A CNET journalist who had long dismissed the Apple Watch as an unnecessary gadget describes how a single test changed that view. The shift began in 2018, when the Apple Watch Series 4 introduced ECG capability. Skeptical that the watch's small sensor could match the wires, stickers and monitors of a hospital-grade electrocardiogram, the reporter arranged to test the Series 4's ECG against a hospital ECG for a CNET story and video. Unexpectedly, the reporter, then a healthy and active 30-year-old, became part of the story.
An electrocardiogram reads the heart's electrical signals and requires a complete electrical circuit. The Apple Watch completes that circuit through two electrodes: one on the back of the case, resting against the wrist, and one on the Digital Crown, touched by a finger. That amounts to one lead, while a hospital uses 12. Fewer leads mean less detail, but the article states the accuracy is still similar.
During the comparison, the Apple Watch displayed the same pattern as the hospital ECG and flagged an irregular heartbeat. The cardiologist paused to review the results while the reporter tried not to panic on camera. Further testing showed the early beat was benign, most likely caused by stress and sleep deprivation from caring for a new baby while working a full-time job. That moment, the reporter writes, ended the view of the Apple Watch as a vanity-metric machine and began a view of it as a tool that can catch a heart problem before it can be felt.
Years afterward, the reporter gave Apple Watches to their parents as a form of insurance for fall detection and heart-health alerts. Last year, the father's watch flagged something that led to his diagnosis and treatment for a potentially life-threatening heart condition. The reporter notes there are many similar Apple Watch health stories now and expects more.
Looking back, the original article and video serve as a snapshot of the exact moment the reporter's relationship with the Apple Watch changed. The on-camera moment of asking whether it meant death, the reporter confirms, was genuine. The account points to the consumer health role the device plays in the United States, where the Series 4's ECG feature and later heart alerts and fall detection have given buyers a way to monitor conditions outside a clinical setting.
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