Your heart is wired to beat in a specific way. The rhythm of the heart is very organized and controlled by a built-in electrical system. The SA node, the heart’s own natural pacemaker, signals it to relax and contract in a regular rhythm. Usually your heart rate is regular and beats between 60 and 100 times per minute. When you rest or sleep, it beats more slowly. When you are active, it beats more quickly. The SA node controls all of this. Located in the right atrium, the special pacemaker cells that make up the SA node send impulses to the AV node.
You may need a pacemaker if you have an abnormal heartbeat. To understand how a pacemaker works, watch this video. The video will help you learn how to care for and live with your pacemaker.
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