Apple Watch saves man’s life
A man in California, after noticing that his heart rate had dropped to 30 - 40 BPM, visited the A&amp;E department of Scripps Mercy Hospital with a self-diagnosed case of sick sinus syndrome, a condition which can turn life-threatening quickly. In usual cases a week with a heart monitor is needed to fully diagnose the condition but the medical professionals were satisfied with the reading of the Apple Watch and agreed with his self-diagnosis. He had a pacemaker implanted the next day. 
Ken Robson, 64, was visiting his son in San Diego, California when he started feeling weak and light-headed. Whenever that happened, he noticed his Apple Watch was showing a severe decline in heart rate. “Your heart rate doesn’t go into the 30s and 40s unless you’re an Olympic athlete,” Robson told MedCity News.

The next day he went to the emergency room at Scripps Mercy Hospital, where he told the staff that he had researched online and believed he had sick sinus syndrome—which causes an arrhythmic beating of the heart and can turn life-threatening quickly—and he had two weeks of data on his Apple Watch to prove it.

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Usually, to confirm a sick sinus syndrome diagnosis, a patient has to wear a heart monitor for a week to gather data. Moreover, a correct self-diagnosis by reading information on the internet is rare. And doctors usually don’t accept data from a device that hasn’t been clinically validated, because the data may be spurious.

At the hospital, Eric Topol—a cardiologist and a proponent of digital health—checked Robson’s claim with a medical-grade heart monitor. “I was watching my heart rate on my watch while they were watching on a medical-grade monitor, and they synched up,” according to Robson. Topol decided that Robson was indeed suffering from the syndrome.

He got Robson into the surgery and implanted a pacemaker to bring his heart rate back to normal. Robson was allowed to leave the next day. “My son’s a bartender,” Robson told MedCity News. “We went to the bar and had a drink.”

A lot of gadgets often turn out to be gimmicks—in most cases, even the Apple Watch. But if used right, it can sometimes save a life.