A Pacemaker is a battery-powered device that sends electrical
signals to your heart to help it beat at a proper rate or
“pace”. The pacemaker goes under your skin, beneath your
collarbone and is connected to your heart by one or more wires
(leads). It is used to treat bradycardia and atrial fibrillation
associated with bradycardia. Bradycardia is an arrhythmia that
is caused when electrical signals are not produced at a fast
enough pace by the SA node (the heart’s natural pacemaker) or
these signals do not reach the ventricle. It causes an
abnormally slow heartbeat. The pacemaker delivers regulated
electric signals to the heart muscle to restore a normal
heartbeat rate. What is a pacemaker ? Although it weighs just
about an ounce, a pacemaker contains a powerful battery,
electronic circuits and computer memory that together generate
electronic signals. The signals, or pacing pulses, are carried
along thin, insulated wires, or leads, to the heart muscle. The
signals cause the heart muscle to begin the contract