Pacemaker
31Pacemaker, 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… …
32Pacemaker (track) — A pacemaker (sometimes colloquially called a rabbit ) is a runner who leads a middle or long distance running event for the first section to ensure a fast time and avoid excessive tactical racing. Pacemakers are frequently employed by race… …
33Pacemaker action potential — A pacemaker action potential is the kind of action potential that provides a reference rhythm for the network. This contrasts with pacemaker potential or current which drives rhythmic modulation of firing rate.Some pacemaker action potentials… …
34pacemaker refractory period — the interval immediately following either pacemaker sensing or pacing, during which improper inhibition of the pacemaker by inappropriate signals is prevented by temporary inactivation of pacemaker sensing …
35Pacemaker, natural — The natural pacemaker of the heart is the sinus node, one of the major elements in the cardiac conduction system, the system that controls the heart rate. This stunningly designed system generates electrical impulses and conducts them throughout… …
36pacemaker escape interval — the period between the last sensed spontaneous cardiac activity and the first beat stimulated by the pacemaker …
37pacemaker lead — pacing lead the connection between the heart and the power source of an artificial cardiac pacemaker, comprising an electrode to contact the heart, a conductor coil, and a terminal pin to connect to the generator …
38pacemaker 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 …
39pacemaker syndrome — vertigo, syncope, and hypotension, often accompanied by dyspnea, cough, nausea, peripheral edema, and palpitations, induced or exacerbated by abnormalities of the cardiac pacemaker so that it stimulates the ventricle. The symptoms occur because… …
40pacemaker twiddler syndrome — twiddler s syndrome in a patient with an artificial cardiac pacemaker …
