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KMID : 1011920110120040039
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International Journal of Arrhythmia
2011 Volume.12 No. 4 p.39 ~ p.42
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Diagnosis and treatment of lead fracture
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Joung Bo-Young
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Abstract
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Lead-related problems, including lead fracture, are not common. There is an extensive body of diagnostic data regarding both device and lead function in the most recent generation of pacemakers and ICDs. Regular measurement of lead impedance and pacing thresholds allow for the early detection of lead insulation breaks, fracture, dislodgement, or other problems. The analysis of stored intracardiac electrograms (EGMs) alerts the physician to problems with oversensing and undersensing, which may manifest as abnormal device function, inappropriate arrhythmia detection, or inappropriate therapy. We have reported three patients whose device experience included sensing and pacing problems, and inappropriate shock. In these cases, fractured leads were replaced with new leads.
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KEYWORD
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inappropriate shock, lead fracture, sensing and pacing
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