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Devices that “pace” the heart rate when it is too slow (bradycardia) can take over for the heart’s natural pacemaker, the sinoatrial node, when it is functioning improperly. Pacemakers monitor and regulate the rhythm of the heart and transmit electrical impulses to stimulate the heart if it is beating too slowly.
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The sensations of feeling the heartbeat are called “palpitations.”
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Peripheral artery disease is a clogging of the arteries in the legs or, less often, in the arms.
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Extra, early or “skipped” beats are the most frequent cause of irregular heart rhythms. These can start in the upper or lower chambers of the heart.
