ventricular extrasystole

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a premature cardiac contraction that is independent of the normal rhythm and arises in response to an impulse outside the sinoatrial node.
atrial extrasystole one in which the stimulus is thought to arise in the atrium elsewhere than at the sinoatrial node.
atrioventricular extrasystole one in which the stimulus is thought to arise in the atrioventricular node.
interpolated extrasystole a contraction taking place between two normal heartbeats.
nodal extrasystole atrioventricular extrasystole.
retrograde extrasystole a premature ventricular contraction followed by a premature atrial contraction, due to transmission of the stimulus backward, usually over the bundle of His.
ventricular extrasystole one in which either a pacemaker or a re-entry site is in the ventricular structure.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ven·tric·u·lar ex·tra·sys·to·le

a premature ventricular complex.
Farlex Partner Medical Dictionary © Farlex 2012

ven·tric·u·lar ex·tra·sys·to·le

(ven-trik'yū-lăr eks'tră-sis'tŏ-lē)
A premature contraction of the ventricle.
Synonym(s): infranodal extrasystole.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Looking at coverage for ventricular extrasystoles only, there was a coverage of 21.4 [13.5; 29.8]% in the 50-patient cohort and 25.4 [16.7; 34.9]% in the analyzable cohort 42 subjects.
Objective: To determine the relationship between levels of anxiety and burnout and prevalence of atrial extrasystoles (AESs) and ventricular extrasystoles (VESs) among critical care nurses.
Delayed afterdepolarization reaching a critical threshold can trigger clinical arrhythmias, including ventricular extrasystoles, bidirectional ventricular tachycardia, and VF [17].
Holter ECG device Syneflash Card MinHR/24h revealed findings composed of an hour intervals of the heart-rate, pause, missed beats, supraventricular extrasystoles (isolated and couplet), ventricular extrasystoles (isolated and couplet), total extrasystoles and ST segment deviations each.
determined ECG disorder such as sinus tachycardia or bradycardia, bundle branch conduction defects, non-specific ventricular repolarization disturbances, supraventricular and ventricular extrasystoles, prolonged QT interval, low voltage of the QRS complexes in standard limb leads, atrioventricular block first-degree, and atrial fibrillation in patients with HFRS.
The other developed a Brugada ECG and frequent ventricular extrasystoles that evolved into ventricular tachycardia and repetitive ventricular arrhythmias (electrical storm) (20).

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