PMID: 9173703Feb 1, 1997Paper

Atrial sensing and atrioventricular synchrony in single lead VDD pacemakers. Can the appearance of atrial undersensing be predicted?

Zeitschrift für Kardiologie
U K WiegandJ Potratz

Abstract

Single-lead VDD-pacing is an alternative to DDD-systems in patients with AV-block and normal sinus node function. Atrial sensing plays a central role in these pacemakers. AV-synchrony, incidence of atrial arrhythmias and the occurrence of sinus node disease were investigated in 108 patients with VDD-pacemakers followed over a mean period of 24.8 months after implantation. Determinants influencing the occurrence of atrial undersensing were especially focused on. Mean atrial potential and sensing threshold were reduced within the first 2 weeks after implantation (p < 0.01). Intermittent atrial undersensing occurred in 25.9% of patients and was observed in 82.1% of these patients within the first 2 weeks after implantation. Positioning the atrial dipole in the low right atrium showed a significantly higher incidence of atrial undersensing (42% in comparison to 24% in the other positions). In a multivariate analysis including intra- and postoperative measurements as well as characteristics of the pacemakers and leads, it was the only parameter significantly (p < 0.02) correlated to the occurrence of atrial undersensing. Atrial fibrillation was observed in 4.6% of patients, a sinus node disease became evident in 2.7% of patients; 92...Continue Reading

Citations

Nov 8, 2002·Pediatrics International : Official Journal of the Japan Pediatric Society·Ozlem M BostanSencan Ozme
Jul 7, 1999·Pacing and Clinical Electrophysiology : PACE·U K WiegandJ Potratz
Jun 2, 2000·Pacing and Clinical Electrophysiology : PACE·U K WiegandH A Katus
Feb 1, 1998·Herzschrittmachertherapie & Elektrophysiologie·C W IsraelN Lokhoff
May 5, 2005·Pacing and Clinical Electrophysiology : PACE·Majid HaghjooMohammad Ali Sadr-Ameli
Jul 14, 1999·Circulation·T Al-SheikhE D Engelstein
May 31, 2003·Scandinavian Cardiovascular Journal : SCJ·Miia HolmströmKirsi Lauerma

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