Pacemaker, internal

Pacemaker, internal
A device that uses electrical impulses to regulate the heart rhythm or to reproduce that rhythm. An internal pacemaker is one in which the electrodes into the heart, the electronic circuitry and the power supply are implanted (internally) within the body. Although there are different types of pacemakers, all are designed to treat bradycardia, a heart rate that is too slow). Pacemakers may function continuously and stimulate the heart at a fixed rate or at an increased rate during exercise. A pacemaker can also be programmed to detect too long a pause between heartbeats and then stimulate the heart. History: The internal pacemaker was invented by Wilson Greatbatch in 1958. While building an oscillator to record heart sounds, he installed a resistor with the wrong resistance in the unit. It began to give off a steady electrical pulse. Greatbatch realized that the device could be used to regulate the heart and hand-crafted the world's first implantable pacemaker. Greatbatch later invented the corrosion-free lithium battery to power the pacemaker.

Medical dictionary. 2011.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • Pacemaker, artificial — A device that uses electrical impulses to regulate the heart rhythm or to reproduce that rhythm. An internal pacemaker is one in which the electrodes into the heart, the electronic circuitry and the power supply are implanted (internally) within… …   Medical dictionary

  • Pacemaker, implantable — A device that uses electrical impulses to regulate the heart rhythm or to reproduce that rhythm. An internal pacemaker is one in which the electrodes into the heart, the electronic circuitry and the power supply are implanted (internally) within… …   Medical dictionary

  • pacemaker pocket — the subcutaneous area in which the pulse generator and pacing leads of an internal pacemaker are implanted, usually developed in the prepectoralis fascia or the retromammary area …   Medical dictionary

  • Implantable pacemaker — A device that uses electrical impulses to regulate the heart rhythm or to reproduce that rhythm. An internal pacemaker is one in which the electrodes into the heart, the electronic circuitry and the power supply are implanted (internally) within… …   Medical dictionary

  • Artificial pacemaker — A device that uses electrical impulses to regulate the heart rhythm or to reproduce that rhythm. An internal pacemaker is one in which the electrodes into the heart, the electronic circuitry and the power supply are implanted (internally) within… …   Medical dictionary

  • cardiovascular disease — Introduction       any of the diseases, whether congenital or acquired, of the heart and blood vessels (blood vessel). Among the most important are atherosclerosis, rheumatic heart disease, and vascular inflammation. Cardiovascular diseases are a …   Universalium

  • Primate basal ganglia system — The primate basal ganglia system is a symmetrical major cerebral system that has only recently been recognized. In the past, part of it was presented as motor or extrapyramidal , complementary to the corticospinal (pyramidal) system. Contrary to… …   Wikipedia

  • Action potential — In physiology, an action potential is a short lasting event in which the electrical membrane potential of a cell rapidly rises and falls, following a consistent trajectory. Action potentials occur in several types of animal cells, called… …   Wikipedia

  • ICD-9-CM Volume 3 — is a system of procedural codes. It is a subset of ICD 9 CM (volumes 1 and 2 are used for diagnostic codes.) The United States National Center for Health Statistics drafted ICD 10 PCS in 2000 as a potential replacement for ICD 9 CM Volume 3, but… …   Wikipedia

  • Ganglions de la base du primate — Système des ganglions de la base du primate Le système des ganglions de la base est un ensemble d éléments du système nerveux formant un système qui ne se définit pas a priori par des « fonctions » mais par une combinatoire de… …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”