A pacemaker is a small, battery-powered device that controls the heartbeat. Our heartbeats are controlled by a highly efficient, biological electrical system that ensures our heart steadily pumps ...
Add Yahoo as a preferred source to see more of our stories on Google. Electrocardiograms, or ECGs, record the electrical activity of your heart. Randy Faris/The Image Bank via Getty Images Your ...
The pacemaker is being reinvented. Originally, it was developed to remedy heart rhythm irregularities by use of electrical stimulation. The first pacemaker was implanted 66 years ago, in 1958. About ...
The human heart rate is under the influence of various hormonal and neural control mechanisms. Normally, conduction of an electrical impulse through the heart begins at the sinoatrial (SA) node and ...
The rhythm in a working heart is regulated by electrical impulses. Disturbances of this bioelectrical process can result in cardiac arrhythmias, or irregularities in heartbeat -- a common ailment that ...
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What Happens When You Have a Heart Block?
First-degree heart block is the mildest type and often requires no treatment. Third-degree heart block is the most severe and ...
SUDDEN death in persons with artificial pacemakers is a continuing and disturbing problem. Causes include pacemaker-catheter displacement, electric-component failure, broken wires and rising pacing ...
PHOENIX — It’s about the size and weight of a penny — yet it can help regulate an adult’s heartbeat. The Micra TPS pacemaker is the world’s smallest to date. Abrazo Heart Hospital in Phoenix started ...
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