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Atrial Systole and Ineffective Pacemaker Stimuli
Author(s) -
ORO ANTONIO GOICOLEA,
AYALA GERMÁN SERRANO,
AYZA MIGUEL WILHELMI,
MEABE JUAN ANTONIO ZUAZO,
DÍEZ JOSÉ RAMÓN GUTIÉRREZ,
GARRIDO RAMÓN HERNÁNDEZ,
RIPOLL ANTONIO SARABIA,
ALVAREZ JUSTO GONZÁLEZ
Publication year - 1981
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1981.tb06221.x
Subject(s) - medicine , cardiology , systole , cardiac cycle , electrocardiography , diastole , blood pressure
An unusual case of pacemaker failure induced by atrial activity is presented. The pacemaker stimulus was ineffective for ventricular capture not only with low energy output (decreased pulse duration) of the generator, but also with pulse width two to three times the stimulation threshold. The two possible mechanisms of this phenomenon, one electrotonic and the other mechanical, are discussed. This report strongly supports the mechanical hypothesis. (PACE, Vol. 4, September‐October, 1981)