supraventricular tachycardia

(SVT)
a fast heart beat stemming from an abnormal area in the atria of the heart. It is often benign and relatively easily treated. However, it may be so fast that it reduces the pumping efficiency of the heart, causing a fall in blood pressure or heart failure. See also arrhythmia.

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(SVT) any regular tachycardia in which the point of stimulation is located above the bundle branches, either in the sinus node, atria, or atrioventricular junction; it may also include those arising from large reentrant circuits encompassing both atrial and ventricular sites.

Medical dictionary. 2011.

Look at other dictionaries:

  • Supraventricular tachycardia — Classification and external resources Lead II electrocardiogram strip showing SVT with a heart rate of about 150. ICD 10 I …   Wikipedia

  • supraventricular tachycardia — SVT a rapid regular heart beat that is usually due to a re entry circuit between the atria and ventricles in the context of an accessory pathway (see Wolff Parkinson White syndrome). It is less commonly due to an ectopic focus in an atrium that… …   The new mediacal dictionary

  • Tachycardia — ECG showing sinus tachycardia with a rate of about 100 beats per minute. ICD 10 I47 I …   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

  • Tachycardia (disambiguation) — A Tachycardia is the medical term as in Supraventricular tachycardia.Tachycardia may also refer to:*Name of the online book by Satsvarupa dasa Goswami, [http://www.sdgonline.org/tachycardia.html named Tachycardia: A Journal] …   Wikipedia

  • tachycardia — n. an increase in the heart rate above normal. Sinus tachycardia may occur normally with exercise or excitement or it may be due to illness, such as fever. Arrhythmias may also produce tachycardia (ectopic tachycardia). See: ventricular… …   The new mediacal dictionary

  • supraventricular — adjective Date: 1951 relating to or being a rhythmic abnormality of the heart caused by impulses originating above the ventricles < supraventricular tachycardia > …   New Collegiate Dictionary

  • supraventricular — Above the ventricles; especially applied to rhythms originating from centers proximal to the ventricles, namely in the atrium, AV node, or AV junction, in contrast to rhythms arising in the ventricles themselves. * * * su·pra·ven·tric·u·lar ven… …   Medical dictionary

  • Ventricular tachycardia — Classification and external resources ICD 10 I …   Wikipedia

  • AV nodal reentrant tachycardia — Infobox Disease Name = PAGENAME Caption = DiseasesDB = ICD10 = ICD10|I|47|1|i|30 ICD9 = ICD9|426.89, ICD9|427.0 ICDO = OMIM = MedlinePlus = eMedicineSubj = med eMedicineTopic = 2955 eMedicine mult = eMedicine2|ped|2535 MeshID = D013611 AV nodal… …   Wikipedia

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