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Orthogonal Electrogram Sensing
Author(s) -
GOLDREYER BRUCE N.,
KNUDSON MARK,
CANNOM DAVID S.,
WYMAN MILFORD G.
Publication year - 1983
Publication title -
pacing and clinical electrophysiology
Language(s) - French
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1983.tb04391.x
Subject(s) - medicine , intracardiac injection , afferent , cardiology
Le recueil de ľéléctrogramme intracardiaque donne ľinformation nécessaire aux systèmes de stimulation à la demande. Les troubles du recueil surviennent dans près de 50% de stimulateurs unipolaires, ceux de ľoreillette sont encore plus fréquents. Le recueil par électrode orthogonale ne demande pas de contact avec le myocarde et on obtient de hauts potentiels ?origine auriciilaire avec rejection totale des pontentiels ventriculaires. Ce système permet la sequence ?activation aussi bien que la vérification de la capture. Intracardiac electrogram sensing is the afferent limb of demand pacing systems. Under‐ and over‐sensing at the ventricular level has been demonstrated in almost 50% of implanted unipolar pulse generators, and atrial eJectrogram sensing problems are more common. A unique dedicated sensor employing noncontacting and circumferentially placed orthogonal electrodes was tested at both the atrial and ventricular levels. Electrograms demonstrated voltages similar to those recorded from contacting electrodes, but with complete far‐field rejection of signals from the opposite chamber. Orthogonal electrograms allowed for activation sequencing and capture verification as well.