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Detection of Insulation Failure by Gradual Reduction in Noninvasively Measured Electrogram Amplitudes
Author(s) -
BEEK GERARD J.,
DULK KAREL,
LINDEMANS FRED W.,
WELLENS HEIN J.J.
Publication year - 1986
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.1540-8159.1986.tb05427.x
Subject(s) - medicine , lead (geology) , cardiology , reduction (mathematics) , amplitude , physics , geometry , mathematics , quantum mechanics , geomorphology , geology
Insulation failure of pacemaker leads may give rise to functional defects such as under‐ or oversensing, loss of capture or muscle stimulation. An increased incidence of such failures has been reported for the bipolar polyurethane‐insulated Medtronic model 6972 pacing lead. It is therefore important to identify techniques that will detect such insulation defects early. A case report is presented in which diminishing electrogram amplitude at follow‐up predicted lead failure several months before becoming clinically manifest. This finding suggests that routine measurement of such an electrogram may be a useful tool in predicting impending lead malfunction.