How pacemakers work How pacemakers work. Animated explanation of the mechanics of the human heart, and the devices that can assist it Implantable pacemakers and defibrillators are devices that apply electric shocks to maintain the rhythm of the heart and, if necessary, restart it. As the technology improves and the list of treatable conditions grows, the number of devices being implanted is increasing steadily and now exceeds half a million a year. The heart is made up of four chambers; two atri

⚡️ Pacemakers 101 A pacemaker is a small, battery-powered device that helps regulate abnormal heart rhythms. Implanted under the skin, it monitors the heart’s electrical activity and delivers impulses only when needed to restore a healthy beat. The system has two key parts: Pulse generator: battery circuit creating impulses Leads: thin wires carrying signals to the heart muscle Modern pacemakers are often “on-demand,” supporting the heart only when it needs it. #Cardiology #Pacemaker #Arrhythmia