automated external defibrillator; wearable defibrillator (AED, LifeVest)
Jump to navigation
Jump to search
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
- use in patients with in-hospital cardiac arrest does not lower mortality[2]
- use in post-MI patients with LVEF < 35% does not lower mortality[6]
Procedure
- automated external defibrillators deliver 150-360 J
Notes
- history of malfunction issues[3]
- LifeVest wearable cardioverter defibrillator approved for use in children[4]
More general terms
Additional terms
References
- ↑ ACLS - The Reference Texbook ACLS: Principles & Practice, Cummins RO et al (eds), American Heart Association, 2003 ISBN 0-87493-341-2
- ↑ 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 - ↑ 3.0 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
- ↑ 4.0 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
- ↑ 5.0 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
- ↑ 6.0 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