The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

The human heart, often described as the body's engine, is a remarkable organ that tirelessly beats to keep us alive. At the core of this vital organ, intricate processes occur when it contracts, where ...

Hesham Sadek, MD, PhD, is the director of the Sarver Heart Center and chief of the Division of Cardiology in the Department of Medicine at the U of A College of Medicine – Tucson. According to the ...