Engineers and physicians have developed a wearable ultrasound device that can assess both the structure and function of the human heart. The portable device, which is roughly the size of a postage ...

With upright exercise there is a slower rise in heart rate in the elderly compared to the younger subject. Stroke volume is maintained in the elderly person by an increase in end-diastolic volume ...

Accurately measuring electrical signals and calcium levels in the heart can lead to earlier treatment of potentially fatal conditions, such as heart attack or congestive heart failure. Calcium plays ...