Changes in morphology of the paced QRS complex related to pacemaker output.

Pacing and Clinical Electrophysiology : PACE
L M van GelderC H Tielen

Abstract

The influence of pacemaker output on the morphology of the paced QRS complex was studied from standard lead electrocardiograms in 69 patients with bipolar pacemakers. In 40 of the 69 patients (58%), there was a significant (P less than 0.001) change in electrical axis, from -75 degrees at the low output setting (2.7 V, 0.15 msec) to -67 degrees at the high output setting (8.1 V, 2.29 msec). In 30 patients, these changes were also associated with changes in the QRS morphology and in the T-wave. This phenomenon may be explained by additional stimulation from the proximal electrode at high output, thus altering the pattern of depolarization.

References

Jan 1, 1987·Pacing and Clinical Electrophysiology : PACE·G OretoF Arrigo
Jul 1, 1987·Pacing and Clinical Electrophysiology : PACE·M KleinfeldJ J Rozanski

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Citations

Sep 11, 2016·Journal of Veterinary Cardiology : the Official Journal of the European Society of Veterinary Cardiology·M A OyamaA R Gelzer
Feb 16, 2012·Circulation. Arrhythmia and Electrophysiology·Roderick TungKalyanam Shivkumar
May 1, 1991·Pacing and Clinical Electrophysiology : PACE·A H KadishF Morady
Nov 1, 1992·Clinical Physics and Physiological Measurement : an Official Journal of the Hospital Physicists' Association, Deutsche Gesellschaft Für Medizinische Physik and the European Federation of Organisations for Medical Physics·M Malik, A J Camm
May 6, 2004·Pacing and Clinical Electrophysiology : PACE·Nicasio Perez-CastellanoCarlos Macaya

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