A pacemaker (or artificial pacemaker) is a medical device that uses electrical impulses, delivered by electrodes contacting the heart muscles, to regulate the beating of the heart. The primary purpose of a pacemaker is to maintain an adequate heart rate, either because the heart’s native pacemaker is not fast enough, or there is a block in the heart’s electrical conduction system.
Image is a dual chamber pacemaker in an 81 year old man.
Dude. That guy has some severe cardiomegaly with some surrounding pulmonary edema.
It looks like he is having an acute exacerbation of CHF. Get that man some Lasix! Stop talking about his pacemaker! Geez, guys. Priorities.