If you’ve ever known someone with a serious heart condition, there’s a good chance you’ve heard talk about pacemakers. The idea of pacemakers has been around since the late 1800s, but the first implanted pacemaker, implanted in 1958, failed after three hours. They’ve come quite a long way since then, saving and extending countless lives all over the world.

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Topics: pacemakers, how a pacemaker helps regulate the heart, who is a good candidate for a pacemaker