Abstract:A 65-year-old gentleman with dual chamber pacemaker presented with presyncope. The ECG raised concerns of oversensing which was confirmed by magnet response. The device interrogation revealed noise in ventricular channel temporally associated with P wave. The pacing thresholds were normal. Although the ventricular lead impedance was within normal limit the impedance trend suggested 100 Ω decline over last 1 year. RV lead insulation failure was speculated and supported by the bipolar and unipolar intracardiac e… Show more
“… 6 A related issue is when a lead integrity issue of the ventricular lead at the atrial level causes noise during atrial contraction and mimics far-field P-wave oversensing. 7 …”
“… 6 A related issue is when a lead integrity issue of the ventricular lead at the atrial level causes noise during atrial contraction and mimics far-field P-wave oversensing. 7 …”
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