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