ectopic focus

ectopic focus
see under pacemaker.

Medical dictionary. 2011.

Look at other dictionaries:

  • Ectopic pacemaker — An ectopic pacemaker or ectopic focus is an excitable group of cells that causes a premature heart beat outside the normally functioning SA node of the human heart. Acute occurrence is usually non life threatening, but chronic occurrence can… …   Wikipedia

  • Ectopic — In the wrong place. Out of place. An ectopic kidney, for example, is one that is not in the usual location. The term ectopic comes from the Greek ektopis meaning displacement ( ek , out of + topos , place = out of place). The first person to use… …   Medical dictionary

  • ectopic beat — a heartbeat due to an impulse generated somewhere in the heart outside the sinoatrial node. Ectopic beats are generally premature in timing; they are classified as supraventricular if they originate in the atria and ventricular if they arise from …   Medical dictionary

  • ectopic beat — extrasystole a heartbeat due to an impulse generated somewhere in the heart outside the sinoatrial node. Ectopic beats are generally premature in timing; they are classified as supraventricular if they originate in the atria and ventricular if… …   The new mediacal dictionary

  • ectopic rhythm — a heart rhythm initiated by a focus outside the sinoatrial node …   Medical dictionary

  • EF — ectopic focus; edema factor; ejection fraction; elastic fibril; electric field; elongation factor; embryo fetal; embryo fibroblasts; emergency facility; encephalitogenic factor; endothoracic fascia; endurance factor; eosinophilic fasciitis;… …   Medical dictionary

  • EF — • ectopic focus; • edema factor; • ejection fraction; • elastic fibril; • electric field; • elongation factor; • embryo fetal; • embryo fibroblasts; • emergency facility; • encephalitogenic factor; • endothoracic fascia; • endurance factor; •… …   Dictionary of medical acronyms & abbreviations

  • Cardiac dysrhythmia — Arrhythmia redirects here. It is not to be confused with Erythema. Cardiac dysrhythmia Classification and external resources Ventricular fibrillation (V Fib or VF) an example of cardiac arrhythmia. ICD …   Wikipedia

  • Tachycardia — A rapid heart rate, usually defined as greater than 100 beats per minute. The tachycardias include sinus tachycardia, paroxysmal atrial tachycardia (PAT), and ventricular tachycardia. Sinus tachycardia is due to rapid firing of a normal structure …   Medical dictionary

  • Cardiac arrhythmia — Dysrhythmia redirects here. For the American band, see Dysrhythmia (band). ICDO = OMIM = MedlinePlus = 001101 eMedicineSubj = eMedicineTopic = MeshID = D001145 Cardiac arrhythmia (also dysrhythmia) is a term for any of a large and heterogeneous… …   Wikipedia

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