A pacemaker is a device that is inserted into the chest or abdomen that helps to control your heartbeat. It sends electrical currents to the heart if the heart starts beating too slowly. Pacemakers can also monitor your heartbeat and record your heart’s electrical activity. Cardiac resynchronization therapy (CRT), also known as biventricular pacing, is a special pacemaker that helps keep the right and left ventricles pumping at the same time.
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Pros: Very few negative side effectsBy