premature ventricular contraction

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Related to Ventricular premature complexes: ventricular extrasystole, ventricular ectopy

premature ventricular contraction (PVC),

compression within the lower cardiac chambers; such contractions may cause perception of palpitation in patient.
Farlex Partner Medical Dictionary © Farlex 2012

premature ventricular contraction

n. Abbr. PVC
An ectopic heartbeat that originates in the ventricles of the heart and sometimes produces accompanying palpitations.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

premature ventricular contraction

Ventricular premature beat Cardiology A ventricular beat initiated by an ectopic focus, which occurs before the usual sinuatrial beat, characterized by premature, widened, bizarre QRS complexes, not preceded by a P wave; PVCs are extremely common, occur in12 of normal adults monitored by EKG for 24 hrs, and are of no significance Etiology Anxiety, fever, stimulants, associated with drug toxicity–digitalis, quinidine, tricyclic antidepressants and an indication for discontinuing therapy Treatment Lidocaine, quinidine, propranolol, amiodarone
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

pre·ma·ture ven·tri·cu·lar con·trac·tion

(PVC) (prē'mă-chŭr' ven-trik'yū-lăr kŏn-trak'shŭn)
Compression within the lower cardiac chambers; such contractions may cause perception of palpitation in patient.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

pre·ma·ture ven·tri·cu·lar con·trac·tion

(PVC) (prē'mă-chŭr' ven-trik'yū-lăr kŏn-trak'shŭn)
Compression within the lower cardiac chambers.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
The presence of ventricular premature complexes (VPCs) in patients with congestive heart failure (CHF) was approximately 48% as monitored by the 24-h ambulatory electrocardiograms (ECGs).[sup][1] VPCs generally causes dyssynchrony with reduced ventricular contraction, leading to adverse ventricular remodeling and is detrimental to ventricular systolic function.[sup][2] Therefore, VPCs and CHF may provoke each other, creating a vicious cycle.
Frequency, origin, and outcome of ventricular premature complexes in patients with or without heart diseases.
EADs that reach threshold potential cause ventricular premature complexes that initiate runs of polymorphic ventricular tachycardia.
This group of consisted of ventricular flutter (Fig.11), ventricular fibrillation (Fig.12), ventricular premature complexes (Fig.13), ventricular tachycardia (Fig.
Ventricular premature complexes occurring after each sinus-initiated QRS complex is the commonest form of bigeminal rhythm.
A 24-hour ambulatory ECG recorded during the same admission also showed a striking transient increase in the P-R interval following a couplet of ventricular premature complexes (Figure 2), again suggesting the presence of dual A-V nodal pathways with the fast pathway having a longer refractory period than the slow pathway, as is usually the case.
During this patient's many episodes of tachycardia, there were numerous ventricular premature complexes. Like the one shown here, none of them interrupted the tachycardia because none of them depolarized the A-V node.

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