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@Article{Ulman2017-07-01, author={Ulman, Mateusz and Boczar, Krzysztof and Holcman, Katarzyna and Ziąbka, Magdalena and Dębski, Maciej and Lelakowski, Jacek and Ząbek, Andrzej}, title={Endocardial lead insulation wear in a scanning and optical microscope}, title={Endocardial lead insulation wear in a scanning and optical microscope}, journal={Advances in Clinical and Experimental Medicine}, year={0000}, volume={0}, number={0}, pages={0--0}, month={07}, day={01}, publisher={Wroclaw Medical University}, abstract={Background. The path and interaction of leads within the cardiovascular system are influenced by various factors, including the implantation technique. Furthermore, the multifaceted composition of these leads, often comprising multiple materials, can contribute to their potential degradation and wear over time.Objectives. Our aim was to investigate the wear of lead insulation following the removal of transvenous leads and pinpoint the regions of the lead most vulnerable to damage.Material and Methods. We undertook a prospective analysis of patients from a single tertiary center who underwent transvenous lead explantation (TLE) between October 1, 2013, and July 31, 2015. Specifically, our examination focused on endocardial leads removed using simple screw-out and gentle traction techniques. Subsequent lead evaluations were conducted utilizing scanning electron and optical microscopes.Results. Among the 86 patients who underwent the TLE procedure, 26 patients (30%) required the removal of 39 leads through simple traction. Inspection using scanning electron microscopy consistently indicated insulation damage across all leads. A total of 347 damaged sites were identified: 261 without lead unsealing and 86 exhibiting unsealing. Notably, the sections of the leads located within the intra-pocket area demonstrated the highest vulnerability to damage (odds ratio (OR): = 9.112, 95% confidence interval (95% CI): 3.326–24.960), whereas the intravenous regions displayed the lowest susceptibility (OR: 0.323, 95% CI: 0.151–0.694).Conclusion. Our study reveals that all evaluated leads exhibited insulation damage, with the intra-pocket segments manifesting a notably higher prevalence of damage than the intravenous segments.}, issn={1899-5276}, doi={10.17219/acem/186864}, url={http://dx.doi.org/10.17219/acem/186864},