What is a single chamber pacemaker?

A single chamber pacemaker helps when the heart rate gets too slow.

A pacemaker is a small device that is used to regulate your heart rhythm. A pacemaker system is a two part electrical system comprised of a pulse generator and either one or two leads (wires). Single chamber pacemakers are pacing systems that use one lead in either the right atrium or the right ventricle of your heart.

A single lead in the right atrium is commonly used in conditions where the normal pacemaker of the heart is not working adequately, such as in the case of sick sinus syndrome. Atrial pacing is used when the sinus node is sending out signals that are too slow or irregular. However, to use this method of pacing, the rest of the heart's normal conduction system must be functioning normally.

More commonly, the single lead is placed in the right ventricle to help correct a slow or irregular heartbeat. This is most often the case when the electrical flow is slowed or blocked in the region of the atrio-ventricular (A-V) node and the normal impulses from the atrium cannot reach the ventricle. This would result in too slow a heartbeat. The pacemaker system would keep the heart beating at a steady rate.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.