biventricular pacing


Also found in: Dictionary, Thesaurus, Acronyms.
Related to biventricular pacing: Implantable cardioverter defibrillator

pacing

 [pās´ing]
1. regulation of the rate of a physiologic process, such as by providing timed stimuli.
biventricular pacing that in which a lead is used to deliver current directly to the left ventricle, in addition to those used to deliver current to the right atrium and ventricle, so that the ventricles can be induced to pump in synchrony.
cardiac pacing regulation of cardiac rhythm (or the rate of contraction of the heart muscle) with electrical stimuli from a pulse generator or an artificial pacemaker.
diaphragm pacing (diaphragmatic pacing) electrophrenic respiration.
dual chamber pacing control of the heart rate by means of an artificial pacemaker that paces, senses, or does both in the atria and in the ventricles.
single chamber pacing control of the heart rate by an artificial pacemaker that paces and senses in either atria or ventricles, usually in the latter.
transthoracic pacing a system of single or dual chamber epicardial pacing in which the electrode wires are sewn directly onto the epicardium and brought out through an incision in the chest wall. See also epicardial pacemaker.
transvenous pacing a system of single or dual chamber endocardial pacing in which the electrode wires are passed through veins into the right atrium or ventricle. See also transvenous pacemaker.

biventricular pacing

A cardiac pacemaker in which the leads are placed in the right atrium, right ventricle and left ventricle.

Indications
Management of patients with heart failure with abnormal intraventricular conduction—e.g., left bundle branch block on ECG, resulting in deranged ventricular contraction or dyssynchrony.
References in periodicals archive ?
Tung's team looked to see if another resynchronization method could help reduce that number by doing a clinical trial comparison between biventricular pacing and 'His bundle pacing'.
Fetics et al., "Left ventricular or biventricular pacing improves cardiac function at diminished energy cost in patients with dilated cardiomyopathy and left bundle-branch block," Circulation, vol.
Biventricular pacing attenuates T-wave alternans and T-wave amplitude compared to other pacing modes.
In these pediatric studies, the contraction sequence and LV pump function during single-site LV apical pacing were at least as good as during biventricular pacing. The favorable hemodynamic effect of LV apical pacing has been recognized before [18, 19], but the findings with regard to LV torsional and strain parameters are new.
But as this more recent study shows, biventricular pacing with a CRT device appears to be a safer and more effective solution for HF patients with heart block.
Schoenfeld: Cardiac resynchronization therapy, which is biventricular pacing, entails putting a special pacemaker lead into the coronary sinus that allows for pacing from the left ventricle in concert with the right ventricle.
In Pacing to Avoid Cardiac Enlargement trial [1] designed to compare biventricular pacing and right ventricular pacing with regards to left ventricular function in patients with standard indications for pacing, 8 of 9 patients in which the left ventricular ejection fraction decreased to less than 45% after 12 months of pacing were in the right ventricular pacing group.
The AdaptivCRT(TM) algorithm, which reduces a patient's odds of a 30-day heart failure readmission by 59 percent,2 and has demonstrated a 46 percent reduction in AF risk compared to echo-optimized biventricular pacing.3
Recently, biventricular pacing was reported to improve heart failure symptoms and reverse remodeling in end-stage HCM patients with LBBB in case reports and a series report.
Biventricular pacing is often used in patients with cardiomyopathy to improve systolic function.
Atrial fibrillation is the main cause for losing biventricular pacing. The ablation of atrial-ventricular junction is another factor of debate and most studies are in favour of this choice by proving the beneficial effects of cardiac resynchronisation therapy in these patients.
Implantation of coronary venous lead is technically the most difficult part of biventricular pacing. Strictures in the target vein are rare abnormalities impeding left ventricular lead implantation.