pacemaker

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pacemaker

1. Anatomy a small area of specialized tissue within the wall of the right atrium of the heart whose spontaneous electrical activity initiates and controls the beat of the heart
2. Med an electronic device for use in certain cases of heart disease to assume the functions of the natural cardiac pacemaker

pacemaker

[′pās‚māk·ər]
(medicine)
A pulsed battery-operated oscillator implanted in the body to deliver electric impulses to the muscles of the lower heart, either at a fixed rate or in response to a sensor that detects when the patient's pulse rate slows or ceases. Also known as cardiac pacemaker; heart pacer.
References in periodicals archive ?
During the course of trial, 53 patients (26%) were reprogrammed to dual 12 chamber pacing due to pacemaker syndrome After PPM implantation, the device related pacemaker infection has been reported to vary from 0.
The reported incidence of pacemaker syndrome varies from 1.
The major disadvantage of single-chamber rate-responsive systems in patients with advanced atrioventricular block is clearly loss of atrioventricular synchrony with the attendant risk of pacemaker syndrome.