Biology of the Heart and Blood Vessels
Also of Interest
An atrial premature beat is an extra heartbeat caused by electrical activation of the atria from an abnormal site before a normal heartbeat would occur. Atrial premature beats typically cause which of the following?
New Electrical Stimulation Therapy Can Help Stroke Patients Move Paralyzed HandMore News
What's Regular Exercise Worth? Maybe $2,500 Per YearMore News