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Improved Dual Chamber Pacing Mode in Paroxysmal Atrioventricular Conduction Disorders
Author(s) -
GIRODO SYLVIE,
RITTER PHILIPPE,
PIOGER GUY,
LAMAISON DOMINIQUE,
MALHERBE ODILE
Publication year - 1990
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.1540-8159.1990.tb06942.x
Subject(s) - medicine , cardiac pacing , cardiology , electrical conduction system of the heart , dual (grammatical number) , electrocardiography , art , literature
GIRODO, S., ET AL.: Improved Dual Chamber Pacing Mode in Paroxysmal Atrioventricular Conduction Disorders. Dual chamber pacing may sometimes be directly indicated for carotid sinus hypersensitivity, vasovagal syndrome, and certain cases of sinoatrial block and intermittent atrioventricular (AV) block, although AV conduction is dominantly normal. At times of normal AV conduction, competition between ventricular pacing and spontaneous ventricular depolarization may occur, with its adverse hemodynamic effects on ventricular function and unnecessary drainage of pacemaker battery energy. A new mode of stimulation is described, called automatic DDD mode, which functions in ‘pseudo‐AAI’ mode during normal AV conduction and reverts to classical DDD function during episodes of AV blocks. Furthermore, during pseudo‐AAI function, the pacemaker measures certain physiological parameters that serve to automatically program certain parameters used in DDD mode. Preliminary clinical evaluation has shown that this new mode functions satisfactorily.