PMID: 11310298Apr 20, 2001Paper

Effect of restoration of AV synchrony on stroke volume, exercise capacity, and quality-of-life: can we predict the beneficial effect of a pacemaker upgrade?

Pacing and Clinical Electrophysiology : PACE
M PrechA Cieśliński

Abstract

The aim of this study was to assess to what extent patients with VVIR pacemakers and without overt symptoms of a pacemaker syndrome benefit from a pacemaker upgrade, and if a preoperative noninvasive measurement of the change in stroke volume (SV) could predict the effect of a pacemaker upgrade. The study group consisted of 20 (12 women, 8 men) VVIR patients with a mean age of 60 years. The indication for the first implantation was AV block in 13 patients and SSS in 7. The mean time of a ventricular pacing was 77 months. The objective (echocardiography, an exercise capacity) and the subjective (the quality-of-life) parameters investigated in patients during ventricular pacing were compared to results obtained 2 months and 1 year after a pacemaker upgrade. To assess preoperatively a change in a SV expected after upgrading, attempts were made to restore AV synchronization by the use of a transesophageal pacemaker. An increase in SV (from 5% to > 35%) during temporary AV resynchronization was observed in each patient. Values of SV increase correlated with those obtained 2 months (r = 0.65; P < 0.01) and 1 year (r = 0.66; P < 0.01) after an upgrade. Superior hemodynamics was associated with a significant improvement of an exercise ...Continue Reading

Citations

Aug 25, 2004·Current Treatment Options in Cardiovascular Medicine·Israel Galtes, Gervasio A. Lamas
Aug 11, 2005·BMC Cardiovascular Disorders·Giuseppe Ando', Francesco Versaci
Jan 28, 2009·Pacing and Clinical Electrophysiology : PACE·Saman NazarianJoseph E Marine
Jun 3, 2004·Journal of the American College of Cardiology·Mark S LinkUNKNOWN MOST Study Investigators
Feb 15, 2002·Journal of Cardiovascular Electrophysiology·Panos E Vardas, Eli I Ovsyscher

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