Importance Of Pacemaker And How To Find The Right Doctor For It! Pacemaker is a device which sends small electrical impulses to the heart muscle. It maintains
a
suitable
heart
rate
or
to
stimulates the lower chambers of the heart. It is also used to treat the fainting spells, also known as syncope, congestive heart failure, and also the hypertrophic cardiomyopathy. Types of Pacemaker:  Leadless Pacemaker  Biventricular Pacemaker