(redirected from SVT)
Also found in: Dictionary, Thesaurus, Medical, Financial, Acronyms, Wikipedia.


see arrhythmiaarrhythmia
, disturbance in the rate or rhythm of the heartbeat. Various arrhythmias can be symptoms of serious heart disorders; however, they are usually of no medical significance except in the presence of additional symptoms.
..... Click the link for more information.



an increase in the frequency of cardiac contractions. In some cases it is not perceived subjectively; in others, it is accompanied by palpitations.

A distinction is made between sinus tachycardia, or the accelerated generation of impulses in the sinus node of the heart, and paroxysmal tachycardia. Sinus tachycardia, manifested by contractions generally ranging between 90 and 120 per minute, may be caused by such physiological factors as increased environmental temperature, physical and mental tension, or the ingestion of food. Sinus tachycardia may also be caused by such pathological states as fever, anemia, diffuse toxic goiter, heart failure, and neurasthenia. Nervous and humoral influences on the heart, such as adrenalin and thyroxine, are important contributing factors in the genesis of sinus tachycardia. The accelerated rhythm of cardiac contractions may have an unfavorable effect on metabolism in the myocardium and on blood circulation. When tachycardia is a symptom of disease, the underlying disease is treated.


Excessive rapidity of the heart's action.
References in periodicals archive ?
Por meio da analise do ambiente termico no interior do galpao, no horario entre 10 e 18 h, verificou-se que o tratamento SVT apresentou valores medios de ITU dentro da faixa classificada alerta aos produtores (Thom, 1959), ou seja, entre 74 e 79, para todos os meses do ano (Tabela 1).
Ask for SVT when you refer cases such as this for neuropsychological or psychological evaluation.
For SRPN and SVT trials in which a significant difference was observed between in hybrid and pureline regression responses, hybrid regression slopes ranged from b = 1.
Like its fighter jet and dinosaur namesakes, the F-150 SVT Raptor is tough, fast, aggressive, and built with the off-road enthusiast in mind," he added.
In our opinion the new parameters and other digital filters used to filtration of ventricular SAECG are more efficient than the conventional criteria of VLP in prediction of SVT.
The SVT interior is sharp and surprisingly up-scale for a car in this class.
SVT is a private company based in Texas that provides a full range of domestic and international cross-border services with Mexico.
8 April 2016 - UK-based energy services company Wood Group (LSE: WG) has acquired Australia-based SVT Engineering Consultants, the group said.
Auto Business News-December 10, 2010--Four Wheeler magazine honours Ford F-150 SVT Raptor(C)1994-2010 ENPublishing - http://www.
It's like putting in the last piece of a wonderful jigsaw puzzle," said SVT Executive Director Ron McAdow.