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Premature battery depletion due to compromised low-voltage capacitor in a family of defibrillators.
Montgomery, Jay A; Sensing, Janice Y; Saunders, Sandra D; Clair, Walter K; Abraham, Robert L; Kanagasundram, Arvindh N; Ellis, Christopher R; Crossley, George H; Shoemaker, Moore Benjamin; Saavedra, Pablo.
Afiliação
  • Montgomery JA; Cardiovascular Division, Vanderbilt University Medical Center, Nashville, Tennessee.
  • Sensing JY; Cardiovascular Division, Nashville Veterans Affairs Hospital, Nashville, Tennessee.
  • Saunders SD; Cardiovascular Division, Nashville Veterans Affairs Hospital, Nashville, Tennessee.
  • Clair WK; Cardiovascular Division, Nashville Veterans Affairs Hospital, Nashville, Tennessee.
  • Abraham RL; Cardiovascular Division, Vanderbilt University Medical Center, Nashville, Tennessee.
  • Kanagasundram AN; Cardiovascular Division, Vanderbilt University Medical Center, Nashville, Tennessee.
  • Ellis CR; Cardiovascular Division, Vanderbilt University Medical Center, Nashville, Tennessee.
  • Crossley GH; Cardiovascular Division, Vanderbilt University Medical Center, Nashville, Tennessee.
  • Shoemaker MB; Cardiovascular Division, Vanderbilt University Medical Center, Nashville, Tennessee.
  • Saavedra P; Cardiovascular Division, Vanderbilt University Medical Center, Nashville, Tennessee.
Pacing Clin Electrophysiol ; 42(7): 965-969, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-31045260
ABSTRACT

BACKGROUND:

Boston Scientific (Marlborough, MA, USA) implantable cardioverter-defibrillators (ICDs) and cardiac resynchronization therapy defibrillators (CRT-Ds) manufactured between 2008 and 2014 are potentially subject to premature battery depletion through a low-voltage capacitor malfunction occurring as a result of hydrogen buildup within the device. Although some of these devices are currently under advisory, other devices manufactured during this timeframe carry a lower risk of the same malfunction. These same devices are known to have superior longevity in general, and the overall mean lifespan of the devices remains long.

METHODS:

All patients implanted or followed at our two centers who experienced premature battery depletion and had a Boston Scientific ICD or CRT-D potentially at risk for low-voltage capacitor malfunction were studied retrospectively.

RESULTS:

Nineteen out of 838 patients (2.3%) with devices potentially at risk have had premature battery depletion 5.7% of those under advisory and 1.1% of those not under advisory. None of our patients had compromised therapy, and all had >27 days of projected battery longevity remaining.

CONCLUSIONS:

Undetected premature battery depletion in this population of ICDs has the potential to expose a patient to an interval of time where the device is unable to provide therapy. However, with enrollment in remote monitoring, regular follow-up, and attention to audible alerts, the risk of therapy loss due to low-voltage state can be effectively mitigated. For these reasons, prophylactic generator replacement is not recommended.

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: Pacing Clin Electrophysiol Ano de publicação: 2019 Tipo de documento: Artigo