Advanced search
1 file | 1.05 MB

Undersensing by an ICD due to alternans of the ventricular electrogram

Author
Organization
Abstract
Alternans of the ventricular electrogram (VEGM) during ventricular tachycardia (VT) is a rare cause of ventricular undersensing by an implantable cardioverter-defibrillator (ICD). This report describes a patient with a St. Jude ICD who exhibited sustained monomorphic VT associated with surface QRS alternans, alternating cycle lengths, alternans of the VEGM causing intermittent undersensing of the smaller component, and intermittent 2:1 counting of ventricular intervals during 1:1 sensing in response to the ICD detection algorithm. VEGM undersensing was corrected noninvasively simply by programming the threshold start from 62.5% to 50% which increased the sensitivity based on the amplitude of the VEGM. This maneuver did not affect the satisfactory and stable defibrillation threshold.
Keywords
ventricular tachycardia, alternans, ventricular undersensing by ICD, implantable cardioverter-defibrillator, ELECTRICAL ALTERNANS, TACHYCARDIA, COMPLEX

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 1.05 MB

Citation

Please use this url to cite or link to this publication:

Chicago
Van Heuverswyn, Frederic, Liesbeth Timmers, Roland Stroobandt, and S Serge Barold. 2013. “Undersensing by an ICD Due to Alternans of the Ventricular Electrogram.” Annals of Noninvasive Electrocardiology 18 (1): 84–89.
APA
Van Heuverswyn, F., Timmers, L., Stroobandt, R., & Barold, S. S. (2013). Undersensing by an ICD due to alternans of the ventricular electrogram. ANNALS OF NONINVASIVE ELECTROCARDIOLOGY, 18(1), 84–89.
Vancouver
1.
Van Heuverswyn F, Timmers L, Stroobandt R, Barold SS. Undersensing by an ICD due to alternans of the ventricular electrogram. ANNALS OF NONINVASIVE ELECTROCARDIOLOGY. 2013;18(1):84–9.
MLA
Van Heuverswyn, Frederic, Liesbeth Timmers, Roland Stroobandt, et al. “Undersensing by an ICD Due to Alternans of the Ventricular Electrogram.” ANNALS OF NONINVASIVE ELECTROCARDIOLOGY 18.1 (2013): 84–89. Print.
@article{2021442,
  abstract     = {Alternans of the ventricular electrogram (VEGM) during ventricular tachycardia (VT) is a rare cause of ventricular undersensing by an implantable cardioverter-defibrillator (ICD). This report describes a patient with a St. Jude ICD who exhibited sustained monomorphic VT associated with surface QRS alternans, alternating cycle lengths, alternans of the VEGM causing intermittent undersensing of the smaller component, and intermittent 2:1 counting of ventricular intervals during 1:1 sensing in response to the ICD detection algorithm. VEGM undersensing was corrected noninvasively simply by programming the threshold start from 62.5\% to 50\% which increased the sensitivity based on the amplitude of the VEGM. This maneuver did not affect the satisfactory and stable defibrillation threshold.},
  author       = {Van Heuverswyn, Frederic and Timmers, Liesbeth and Stroobandt, Roland and Barold, S Serge},
  issn         = {1082-720X},
  journal      = {ANNALS OF NONINVASIVE ELECTROCARDIOLOGY},
  keyword      = {ventricular tachycardia,alternans,ventricular undersensing by ICD,implantable cardioverter-defibrillator,ELECTRICAL ALTERNANS,TACHYCARDIA,COMPLEX},
  language     = {eng},
  number       = {1},
  pages        = {84--89},
  title        = {Undersensing by an ICD due to alternans of the ventricular electrogram},
  url          = {http://dx.doi.org/10.1111/j.1542-474X.2012.00521.x},
  volume       = {18},
  year         = {2013},
}

Altmetric
View in Altmetric
Web of Science
Times cited: