1. Internal insulation breaches in an implantable cardioverter-defibrillator lead with redundant conductors 
Robert G. Hauser, MD, FHRS, Jay Sengupta, MD, FHRS, Edward J. Schloss, MD, FHRS, Larissa I. Stanberry, PhD, Moses K. Wananu, MD, Raed Abdelhadi, MD, FHRS 
Heart Rhythm 
DOI: /j.hrthm
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2. Figure 1
Types of leads: (A) Sprint Quattro Secure, (B) Durata, and (C) Endotak Reliance. Dark blue ethylene tetrafluoroethylene insulation covers cable conductors. Light blue polytetrafluoroethylene insulation covers the inner coil.
Heart Rhythm DOI: ( /j.hrthm )
Copyright © 2019 The Authors Terms and Conditions

3. Figure 2
Durata lead showing location of an insulation breach under the proximal superior vena coil (arrow). The cable to the distal right ventricular shocking coil has abraded through the inner silicone from the inside-out and ethylene tetrafluoroethylene has been damaged, allowing the cable to short to the underside of the shocking coil.
Heart Rhythm DOI: ( /j.hrthm )
Copyright © 2019 The Authors Terms and Conditions