title: AutoCapture with dual-coil leads of implantable cardioverter defibrillator.
abstract: AutoCapture (AC) can confirm ventricular capture with true bipolar single coil leads of implantable cardioverter defibrillators (ICD). The compatibility of AC with a new, true bipolar, dual-coil ICD lead needed to be evaluated. This multicenter study enrolled 46 patients (69 +/- 10 years, 37 men) undergoing ICD implantation. All patients received a true bipolar, dual-coil lead. Evoked response (ER) sensitivity and AC threshold tests were performed using a pulse generator with the AC algorithm. Mean capture threshold was 0.85 +/- 0.67 V, pacing impedance 612 +/- 225 Omega, R wave amplitude 13.85 +/- 6.17 mV, and defibrillation threshold 14.4 +/- 5.1 J. AC was recommended in 45 patients (97.8%) with ER and polarization values of 14.86 +/- 7.32 mV and 0.87 +/- 0.69 mV, respectively. The AC algorithm was highly compatible with true bipolar, dual-coil ICD leads. An AC algorithm specifically designed for an ICD may improve the generator longevity. Further examination of AC compatibility with other leads is warranted.
authors.affiliation: Trinity Medical Center, Rock Island, Illinois 61201, USA. AntonioC@trinityqc.com
authors.forename: Helbert
authors.initials: H
authors.lastname: Acosta
authors.forename: Ali
authors.initials: A
authors.lastname: Massumi
authors.forename: Rajesh
authors.initials: R
authors.lastname: Malik
authors.forename: Saleem
authors.initials: S
authors.lastname: Ahmad
authors.forename: Cynthia
authors.initials: C
authors.lastname: Antonio
authors.forename: Zaffer A
authors.initials: ZA
authors.lastname: Syed
mesh_terms: D000368:Aged; D017147:Defibrillators, Implantable; D004566:Electrodes; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D011446:Prospective Studies