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Related to Paroxysmal supraventricular tachycardia: Paroxysmal Atrial Tachycardia


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.
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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


Excessive rapidity of the heart's action.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
After this set of 4 applications, the stimulation protocol was resumed with no signs of inducibility of the paroxysmal supraventricular tachycardia and without nodal eco persistence beats.
A 12-lead electrocardiogram (ECG) showed narrow QRS tachycardia with retrograde P wave, which we diagnosed as paroxysmal supraventricular tachycardia (PSVT) (Figure 1(a)).
Repeated episodes of paroxysmal supraventricular tachycardia were detected on 24 hours electrocardiographic Holter recording.
Atrial fibrillation which can result in ventricular fibrillation and reentrant tachycardia causing paroxysmal supraventricular tachycardia or ventricular tachycardia are known to occur.
Demonstration of dual A-V nodal pathways in patients with paroxysmal supraventricular tachycardia. Circulation 1973;48:549-555.
(TSE: 4523) announced today that Vasolan(R) Tablets 40mg (generic name: verapamil hydrochloride) received approval for the additional indications of the treatment of atrial fibrillation/flutter and paroxysmal supraventricular tachycardia. This approval makes Vasolan the first oral form of calcium channel blockers approved for the treatment of tachyarrhythmia in Japan.
Cardiovascular physiology undergoes tremendous change during pregnancy.[1] Dysrhythmias are far from rare in the gravid patient and include most disorders of rhythm seen in nongravid patients.[2] Of the dysrhythmias seen during pregnancy, supraventricular tachycardias frequently occur, and paroxysmal supraventricular tachycardia (PSVT) is often a complication of the third trimester.[3]
We report the case of a woman of 47 years old, known with paroxysmal supraventricular tachycardia, atrial and ventricular extrasystoles, that presented to 1st Department of Surgery of the Regional Institute of Oncology Iasi, for a right breast tumor with an uncertain diagnosis on the ultrasound breast imaging and mammography.

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