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 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 implantable 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.

Look at other dictionaries:

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  • Pacemaker artificiel — Stimulateur cardiaque Pour les articles homonymes, voir Pacemaker. Le stimulateur cardiaque, ou pacemaker, ou pile est un dispositif implanté dans l’organisme délivrant des impulsions électriques au cœur et permettant par exemple d’accélérer ce… …   Wikipédia en Français

  • Pacemaker cardiaque — Stimulateur cardiaque Pour les articles homonymes, voir Pacemaker. Le stimulateur cardiaque, ou pacemaker, ou pile est un dispositif implanté dans l’organisme délivrant des impulsions électriques au cœur et permettant par exemple d’accélérer ce… …   Wikipédia en Français

  • 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

  • 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

  • Implantable cardioverter-defibrillator — An implantable cardioverter defibrillator (ICD) is a small battery powered electrical impulse generator which is implanted in patients who are at risk of sudden cardiac death due to ventricular fibrillation. The device is programmed to detect… …   Wikipedia

  • 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… …   Medical dictionary

  • implantable — im·plant·able im plant ə bəl adj capable of being implanted in the living body <an implantable pacemaker for the heart> …   Medical dictionary

  • implantable — (ˌ)imˈplantəbəl adjective : capable of being implanted in the living body an implantable pacemaker for the heart …   Useful english dictionary

  • implantable cardiovertor defibrillator — ICD a self contained device, similar to a pacemaker, that monitors heart rhythm and delivers an electric shock to correct life threatening arrhythmia. See also: defibrillator …   The new mediacal dictionary

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