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Show Electric Pacemaker Starts Heart to Beating Again BOSTON, Mass. An artificial electrical pacemaker that has been used successfully in animal experiments experi-ments to make stopped hearts beat again was announced recently. The pacemaker applies an electrical elec-trical shock to a small knob-like area of the heart. The shock stimulates stimu-lates this area, which in turn causes the heart to beat. By controlling the regularity of the electrical shock, doctors can thus control the beating of the heart. The pacemaker is expected to be used for a period long enough to enable tVs heart to function on its own powers, and in cases of irregular irregu-lar heart beats, to restore the heart's action to a normal rhythm. |