PMID: 8945063Nov 1, 1996Paper

Congestive heart failure and VVI pacing mode: dynamic behavior of the dispersion of ventricular repolarization

Pacing and Clinical Electrophysiology : PACE
A G ManolisN Louvros

Abstract

Dynamic Behavior of the Dispersion of Ventricular Repolarization. The aim of this study was to evaluate the circadian variation in the spatial dispersion of ventricular repolarization in continuously paced patients with congestive heart failure (CHF). Fourteen patients (10 males, 4 females, aged 65 +/- 8 years) with CHF due to dilated cardiomyopathy (DCM) and an echocardiographic ejection fraction of 28% +/- 3% were studied. All patients underwent AV junctional RF ablation and permanent pacemaker implantation for drug refractory chronic atrial fibrillation (AF). Patients were evaluated at 1 month postimplant with a three-channel 24-hour Holter monitor, using the three plane Frank orthogonal leads (X, Y, and Z), in VVI pacing mode at 70 beats/min. For each hour, the mean value of spike-T interval dispersion of the first five beats was measured. The control group consisted of 20 patients without structural heart disease, but with AF and complete AV block, continuously paced in VVI mode at 70 beats/min. The dispersion of the spike-T interval had a circadian behavior in the study population, with higher values at night and lower during the daytime. During the daytime, the mean value of spike-T interval dispersion was 39 +/- 5 ms an...Continue Reading

Citations

Jun 7, 2011·Sleep Medicine Reviews·Francesco PortaluppiFabio Fabbian
Jul 31, 2007·Advanced Drug Delivery Reviews·Francesco Portaluppi, Ramón C Hermida
Mar 18, 2005·Pediatrics International : Official Journal of the Japan Pediatric Society·Kenji YasudaShigeyuki Echigo
Jan 24, 2007·Pacing and Clinical Electrophysiology : PACE·Fabrizio DragoGabriele Rinelli
Jan 28, 2003·Circulation Journal : Official Journal of the Japanese Circulation Society·Erdulfo J GaleanoMitsuhiro Yokoyama

❮ Previous
Next ❯

Related Concepts

Related Feeds

Atrial Fibrillation

Atrial fibrillation is a common arrhythmia that is associated with substantial morbidity and mortality, particularly due to stroke and thromboembolism. Here is the latest research.

Atrial Filbrillation

Atrial fibrillation refers to the abnormal heart rhythm characterized by rapid and irregular beating of the atria. Here is the latest research.

Arrhythmia

Arrhythmias are abnormalities in heart rhythms, which can be either too fast or too slow. They can result from abnormalities of the initiation of an impulse or impulse conduction or a combination of both. Here is the latest research on arrhythmias.

Cardiomyopathy

Cardiomyopathy is a disease of the heart muscle, that can lead to muscular or electrical dysfunction of the heart. It is often an irreversible disease that is associated with a poor prognosis. There are different causes and classifications of cardiomyopathies. Here are the latest discoveries pertaining to this disease.