But the feedback from her AliveCor device, a sensor that clips to the back of an iPhone and allows patients to take their own electrocardiograms, checked out normal, providing reassurance.
It's also packing motion control sensors, haptic feedback, dual speakers, shoulder buttons, left and right rear triggers, a microphone, an infrared sensor, near-field communication support, a front-facing camera and a rechargeable battery (it even has its own power adapter).