Response to Letter Regarding Article, “Complications Associated With Revision of Sprint Fidelis Leads: Report From the Canadian Heart Rhythm Society Device Advisory Committee”
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We would like to thank Dr Maytin and colleagues for highlighting some important issues with regard to the Fidelis lead and its appropriate management. The experience that we reported is the only comprehensive experience regarding the Fidelis lead and complications related to its revision.1
The complication classification that we used is based on prior reports on complications due to device advisories or replacements.2,3 Our study was not designed specifically to examine complications due to transvenous lead extraction, so the system of classification suggested by Maytin et al would not be applicable. If traction was attempted, but the lead was abandoned, the patient was classified as lead abandoned. The data reported by Maytin et al4 have significant potential referral bias, as patients with a higher degree of comorbid illness may not have been referred. In …