PMC5412608_01
Inappropriate shock delivered in normal sinus rhythm.
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PMC5412608_01_gr1.jpg
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During the procedure, the patient continued to receive multiple shocks while in sinus rhythm (Figure 1). The lead, which was a Guidant Boston Scientific model number 0148 Endotak Reliance implanted in 2002, was examined under fluoroscopy (Figure 2, and video 1, available online), which showed normal position, and via pacing system analyzer, which showed normal impedance of 560 ohms, normal sensing of more than 12 mV, and normal threshold of 1.25 V at 0.5 milliseconds.
A, B, C: Still images of the cine loop taken for the lead to examine its integrity before changing the generator. The lead appears intact.
gr2.jpg
PMC5412608_01_gr2.jpg
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The lead, which was a Guidant Boston Scientific model number 0148 Endotak Reliance implanted in 2002, was examined under fluoroscopy (Figure 2, and video 1, available online), which showed normal position, and via pacing system analyzer, which showed normal impedance of 560 ohms, normal sensing of more than 12 mV, and normal threshold of 1.25 V at 0.5 milliseconds.