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 ?
She said: "My stomach pains got so bad a few years ago that I had to have a gastric pacemaker fitted in order to keep the muscles moving - that is how badly I have damaged my body.
They claim that gastric balloons, which can cost pounds 3,500, can cause ulcers and that more research is neededon the gastric pacemaker, priced at aroundpounds 12,500.
Neither the balloon, which costs about pounds 3,500 to be fitted, or the pounds 12,500 gastric pacemaker are available on the NHS because they have not been approved by the Government health watchdog, the National Institute for Clinical Excellence.