Left ventricular ejection fraction and prevalence of new left ventricular wall motion abnormality at long-term follow-up in patients with automatic implantable cardioverter-defibrillators treated with dual-chamber rate-responsive pacing at a rate of 70/minute versus backup ventricular pacing at a rate of 40/minute Academic Article uri icon

Overview

MeSH Major

  • Cardiac Pacing, Artificial
  • Defibrillators, Implantable
  • Stroke Volume
  • Ventricular Dysfunction, Left

abstract

  • Baseline and long-term follow-up 2-dimensional echocardiograms were obtained in 160 patients with automatic implantable cardioverter-defibrillators without indications for antibradycardia pacing, who had backup ventricular pacing at a rate of 40/minute (VVI-40) or dual-chamber rate-responsive pacing at a rate of 70/minute (DDDR-70). At 37 months of follow-up for 80 patients treated with VVI-40 and 23 months of follow-up for 80 patients treated with DDDR-70, the mean left ventricular ejection fraction was 36 +/- 8% at baseline and 36 +/- 8% at follow-up and 36 +/- 7% at baseline and 30 +/- 7% at follow-up (p <0.01), respectively. At follow-up, the left ventricular ejection fraction was decreased >7% in 25 of 80 patients (31%)treated with DDDR-70 and in 9 of 80 patients (11%) treated with VVI-40 (p <0.01). A new left ventricular wall motion abnormality developed in 23 of 80 patients (29%) treated with DDDR-70 and in 11 of 80 patients (14%) treated with VVI-40 (p <0.025).

publication date

  • August 2005

Research

keywords

  • Academic Article

Identity

Language

  • eng

Digital Object Identifier (DOI)

  • 10.1016/j.amjcard.2005.03.088

PubMed ID

  • 16054470

Additional Document Info

start page

  • 412

end page

  • 3

volume

  • 96

number

  • 3