automated external defibrillator; wearable defibrillator (AED, LifeVest)

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Introduction

portable, electronic medical devices that automatically sense cardiac arrhythmias (i.e. ventricular fibrillation) & either automatically deliver electrical stimulation or advise the user to do so in order to re-establish a viable heart rhythm.

Indications

* indications for Lifevest

  • same as for implantable ICD, but when
    • temporary contraindication exists for implantable ICD
    • indication may resolve
  • bridging device in heart transplantation[5]

Contraindications

  • Lifevest should not be used where non-arrhythmic risks outweigh arrhythmic risks. especially where life expectacy is < 6 months[5]

Clinical significance

Procedure

Notes

More general terms

Additional terms

References

  1. ACLS - The Reference Texbook ACLS: Principles & Practice, Cummins RO et al (eds), American Heart Association, 2003 ISBN 0-87493-341-2
  2. 2.0 2.1 Chan PS et al. Automated external defibrillators and survival after in-hospital cardiac arrest. JAMA 2010 Nov 17; 304:2129 PMID: https://www.ncbi.nlm.nih.gov/pubmed/21078809
    Haines DE. Automated external defibrillators and the law of unintended consequences. JAMA 2010 Nov 17; 304:2178. PMID: https://www.ncbi.nlm.nih.gov/pubmed/21078808
  3. 3.0 3.1 FDA News Release. January 28, 2015 FDA takes steps to improve reliability of automated external defibrillators. http://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm431907.htm
  4. 4.0 4.1 FDA News Release. December 17, 2015 FDA approves wearable defibrillator for children at risk for sudden cardiac arrest. http://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm466852.htm
  5. 5.0 5.1 5.2 Piccini JP Sr, Allen LA, Kudenchuk PJ et al Wearable Cardioverter-Defibrillator Therapy for the Prevention of Sudden Cardiac Death, A Science Advisory From the American Heart Association. Circulation, March 28, 2016 <PubMed> PMID: https://www.ncbi.nlm.nih.gov/pubmed/27022063 <Internet> http://circ.ahajournals.org/content/early/2016/03/28/CIR.0000000000000394.full.pdf+html
  6. 6.0 6.1 Olgin JE et al. Wearable cardioverter-defibrillator after myocardial infarction. N Engl J Med 2018 Sep 27; 379:1205. PMID: https://www.ncbi.nlm.nih.gov/pubmed/30280654 https://www.nejm.org/doi/10.1056/NEJMoa1800781
    Field ME, Page RL. Another shock for sudden death prevention after myocardial infarction. N Engl J Med 2018 Sep 27; 379:1274 PMID: https://www.ncbi.nlm.nih.gov/pubmed/30257160 https://www.nejm.org/doi/10.1056/NEJMe1809832