premature beat

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a throb or pulsation, as of the heart or of an artery.
apex beat the beat felt over the apex of the heart in the point of maximal impulse.
atrial beat an ectopic beat originating in an atrium.
capture beat
1. a heartbeat resulting from the production of a ventricular complex by a supraventricular source following a period of atrioventricular dissociation.
2. in cardiac pacing terminology, the successful pacing of the heart by a pulse generator.
dropped beat absence of one ventricular contraction.
echo beat reciprocal beat.
ectopic beat a heartbeat originating at some point other than the sinus node.
escape beat (escaped beat) heartbeats that follow an abnormally long pause.
forced beat an extrasystole produced by artificial stimulation of the heart.
fusion beat in electrocardiography, a P or QRS complex that results from the concurrent activation of the atria or the ventricles by two stimuli in the same chambers. An atrial fusion beat results when the sinus beat coincides with an atrial ectopic beat, when two atrial ectopic beats coincide, or when an atrial or sinus beat coincides with retrograde conduction from a junctional focus. A ventricular fusion beat results when a ventricular beat coincides with a sinus beat, a ventricular ectopic beat, or a junctional beat.
junctional beat an ectopic beat originating at the atrioventricular junction; see also junctional rhythm.
premature beat a cardiac event resulting from discharge by an atrial, junctional, or ventricular focus before the next expected sinus beat and at an interval from the last sinus beat that is shorter than its own intrinsic rhythm.
reciprocal beat a heartbeat resulting from an atrial or ventricular complex caused by a return of an impulse to its chamber of origin; called also echo beat.
sinus beat a heartbeat with sinus rhythm.
ventricular beat an ectopic beat originating in a ventricle.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


A nonspecific word for an ectopic beat from any source in the heart.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
Barthel et al., "Heart-rate turbulence after ventricular premature beats as a predictor of mortality after acute myocardial infarction," The Lancet, vol.
Electrophysiological mechanisms by which atrial stretch leads to supraventricular arrhythmias are not fully understood, but studies suggest that volume and pressure overload in the heart can activate stretch-activated ion channels inducing atrial premature beats (NAZIR & LAB, 1996; KAMKIN et al., 1999).
QT dispersion was found to be significantly increased in patients with premature ventricular contractions > 10/day and/or complex ventricular arrhythmias compared to the control group without ventricular premature beats (p=0.002).
AAMI class Normal beat (N) Normal beat (N) Left bundle branch block beat (L) Supraventricular Atrial premature Aberrated atrial ectopic beat (S) beat (A) premature beat (a) Ventricular Premature Ventricular escape ectopic beat (V) ventricular beat (E) contraction (V) Fusion beat (F) Fusion of ventricular and normal beat (F) Unknown beat (Q) Paced beat (/) Fusion of paced and normal beat (f) AAMI class MIT-BIH heart beat types Normal beat (N) Right bundle Atrial escape Nodal branch block beat (e) (junctional) beat (R) escape beat (j) Supraventricular Nodal Supraventricular ectopic beat (S) (junctional) premature premature beat (S) beat (J) Ventricular ectopic beat (V) Fusion beat (F) Unknown beat (Q) Unclassified beat (Q) Table 2: One way ANOVA results for different types of classes.
For instance, a single premature beat may be perceived as a "palpitation" or "skipped beat." Premature beats that are frequent or occur in rapid succession during tachycardia may cause a greater awareness of heart palpitations or a fluttering sensation in the chest or neck.
Clinical characteristics and acute results of catheter ablation for outflow tract ventriculartachycardia or premature beats. J Interv Card Electrophysiol 2012; 35: 301-09.
The 24-hour Holter demonstrated sinus rhythm, 5.605 ventricular premature beats (<6%) with frequent bigeminism, and 16 supraventricular (<1%) premature beats, with no other changes.
Electrocardiography revealed atrial fibrillation with slow ventricular rate, ventricular premature beats, right ventricular hypertrophy, right QRS axis to 120 (fig.1).
The recorded description that palpitation was diagnosed as symptomatic premature beats around 600 BC with pulse palpation from the early Chinese physicians.[sup][22] Chinese medicinal herbs have been used over the past centuries in China for treating arrhythmia and increased in popularity as complementary and alternative therapeutic agents used worldwide.
First, six types of ECG signal beats including normal beats, paced beats, atrial premature beats, right and left bundle branch block beats and premature ventricular contraction beats19 are detected using neural network-based classifier.
Other arrhythmias, such as frequent premature beats or a different arrhythmia arriving from an alternate region of the heart, could be causing your symptoms.
Ventricular arrhythmias were present in 32% of them of which 24% had Ventricular Tachycardia (VT) and 28% had Ventricular Premature Beats (VPB).