Comparison of the Single-Coil ICD Leads and the ePTFE-Covered Dual Coil ICD Leads

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Background: Removal of ICD leads is sometimes necessary for lead infection but can be challenging. Choice of single coil ICD leads (SCLs), or e-PTFE covered dual coil ICD leads (CDCLs) may reduce the risk of such procedure. Among both leads, CDCLs may be advantageous, considering delivering shock therapy. The purpose of this study is to compare DFT of CDCLs with SCLs. Methods: Eighteen patients, including 7 idiopathic ventricular fibrillation, 3 ventricular tachycardia, 3 Brugada syndrome, 2 ischemic heart disease, 1 hypertrophic cardiomyopathy, 1 dilated cardiomyopathy, and 1 long QT syndrome, were divided into two groups, 15 patients with DCLs and 3 patients with SCLs. All patients were analyzed for DFT, and, comparison of average DFT was made between two groups. Results: DFTs of CDCLs were 20 J in 2 patients, and 10 J in all of other patients. DFTs of two patients implanted SCLs were 20 J, and that of another patient was unable to be determined as VF was not induced. The average DFT of CDCLs was lower than that of SCLs (11.5±3.7 J vs 20 J). CDCLs may be far superior to SCLs from the aspect of DFT. Conclusion: Despite expected easier removal, it is thought that we should choose CDCLs than SCLs. Because CDCLs may offer both better DFTs and removability.
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