intraventricular conduction

(redirected from ventricular conduction)

in·tra·ven·tric·u·lar con·duc·tion

conduction of the cardiac impulse through the ventricular myocardium, represented by the QRS complex in the electrocardiogram. HR conduction time is from the onset of the first high frequency component of the His bundle electrogram to the onset of the QRS complex of the surface electrocardiogram (normally 43 ± 12 msec); HV conduction time is from the onset of the first high-frequency component of the His bundle electrogram to the onset of the ventricular electrogram (normally approximates the HR interval but may be a little shorter).

in·tra·ven·tric·u·lar con·duc·tion

(in'tră-ven-trik'yū-lăr kŏn-dŭk'shŭn)
Transference of the cardiac impulse through the ventricular myocardium, represented by the QRS complex in the electrocardiogram.
Synonym(s): ventricular conduction.
References in periodicals archive ?
Supernormal ventricular conduction in dog heart (Abstract).
This recent interest has mainly been stimulated by the very successful introduction of cardiac resynchronization therapy as a new, device-based treatment option for patients with end-stage heart failure and ventricular conduction delays in the mid-1990s.
Blocking these channels decreases the slope of phase 0, which also leads to a decrease in the amplitude of the action potential and hence slows the ventricular conduction [17].
Ventricular hypertrophy is a known risk factor for QT prolongation and altered ventricular conduction and repolarization (Ben-David et al.
A prolonged QRS interval suggests a diseased ventricular conduction system and has been associated with increased risk for sudden cardiac death, among other heart disorders.
If the bundle branches are blocked or conduction originates outside of the normal ventricular conduction fibers, the slower depolarization over alternative pathways results in a wide QRS waveform.
2, the decrease in the rate of depolarization of action potential slows intra ventricular conduction and increases the duration of QRS complex.
5 mm) in leads II, III, or aVF QRS complex Right axis deviation or rightward axis shift Clockwise rotation Right ventricular conduction delay Right ventricular hypertrophy Pseudoinfarction Inferior Anterior Both Left axis deviation (rarely) ST segment Elevation inferiorly and/or anteriorly Depression T wave Inversion inferiorly Inversion anteriorly QT prolongation Modified from references 2 and 7
Cardiac resynchronization therapy became the standard treatment for patients with heart failure refractory to standard medication and delay in ventricular conduction.
Fragmented QRS (fQRS) complexes are special electrocardiographic signals, which reflect altered ventricular conduction around regions of myocardial scaring.