Dr. Smartphone

"The airplane had just taken off when one of the passengers lost consciousness."

Eric Topol pulled his smartphone out of his pocket and immediately performed an electrocardiogram (EKG) on the passenger. He used the device to do an ultrasound scan of the man's heart and measured oxygen levels in his blood. He was then able to give the all-clear and the plane could continue its journey. The man had lost consciousness merely due to a temporarily slowed heart rhythm.