Cited by 297Cardiac pacing and defibrillation studiesCardiac Arrest and ResuscitationCardiac electrophysiology and arrhythmias

Aggregate National Experience With the Wearable Cardioverter-Defibrillator

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Chung, Mina K., Szymkiewicz, Steven J., Shao, Mingyuan, Zishiri, Edwin, Niebauer, Mark J., Lindsay, Bruce D., Tchou, Patrick J.·2010·Journal of the American College of Cardiology

Abstract

Objectives The purpose of this study was to determine patient compliance and effectiveness of antiarrhythmic treatment by the wearable cardioverter-defibrillator (WCD).Background Effectiveness of the WCD for prevention of sudden death is dependent on event type, patient compliance, and appropriate management of ventricular tachycardia/ventricular fibrillation (VT/VF).Methods Compliance and events were recorded in a nationwide registry of post-market release WCDs. Survival, using the Social Security Death Index, was compared with survival in implantable cardioverter-defibrillator (ICD) patients.Results Of 3,569 patients wearing the WCD (age 59.3+/-14.7 years, duration 52.6+/-69.9 days), daily use was 19.9+/-4.7 h (>90% of the day) in 52% of patients. More days of use correlated with higher daily use (p<0.001). Eighty sustained VT/VF events occurred in 59 patients (1.7%). First-shock success was 76 of 76 (100%) for unconscious VT/VF and 79 of 80 (99%) for all VT/VF. Eight patients died after successful conversion of unconscious VT/VF (89.5% survival of VT/VF events). Asystole occurred in 23 (17 died), pulseless electrical activity in 2, and respiratory arrest in 1 (3 died), representing 24.5% of sudden cardiac arrests. During WCD use, 3,541 of 3,569 patients (99.2%) survived overall. Survival occurred in 72 of 80 (90%) VT/VF events and 78 of 106 (73.6%) for all events. Long-term mortality was not significantly different from first ICD implant patients but highest among patients with traditional ICD indications.Conclusions Compliance was satisfactory with 90% wear time in >50% of patients and low sudden death mortality during use. Survival was comparable to that of ICD patients. However, asystole was an important cause of mortality in sudden cardiac arrest events.

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Crossref · 10.1016/j.jacc.2010.04.016

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  • LifeVest showed comparable outcomes to implantable cardiac devices in a 3-year study (n = 3569) with acute event survival at 99.2%.

    “LiveVest showed comparable outcomes to implantable cardiac devices in a 3-year study (n = 3569) with acute event survival at 99.2% [38].”

    From Wearables and the Medical Revolution (2018) · cites this paper as [38]

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Authors
Chung, M. K., Szymkiewicz, S. J., Shao, M., Zishiri, E., Niebauer, M. J., Lindsay, B. D., & Tchou, P. J.
Affiliations
  • Cleveland Clinic (US)
  • ZOLL Medical Corporation (United States) (US)
Corresponding author
Chung, Mina K.
Venue
Journal of the American College of Cardiology
Publisher
Elsevier BV
Published
2010-07
Volume
56
Issue
3
Pages
194-203
ISSN
0735-1097 (ISSN-L)
OpenAlex
W2159588890
Cited by
297
References
16
Citations by year
2026: 5 · 2025: 6 · 2024: 9 · 2023: 15 · 2022: 11 · 2021: 19 · 2020: 26 · 2019: 21 · 2018: 28 · 2017: 33 · 2016: 39 · 2015: 20 · 2014: 14 · 2013: 19 · 2012: 13
FWCI
10.98
Type
journal article
Language
en
Update notices
erratum (2011-01-11)
Open access
Locations
  • Journal of the American College of Cardiology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Medtronic, Inc.
  • Boston Scientific
  • St. Jude Medical
  • Biotronik
  • Medtronic
  • National Institutes of Health (NIH R01 HL090620)
  • ZOLL
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac pacing and defibrillation studies
  • Health Sciences › Medicine › Emergency Medicine › Cardiac Arrest and Resuscitation
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
Keywords
wearable cardioverter defibrillator, medication adherence, sudden cardiac death prevention, ventricular tachycardia, ventricular fibrillation, implantable cardioverter-defibrillator, survival, asystole, sudden cardiac arrest, post-market registry
MeSH terms
Female, Humans, Male, Middle Aged, Patient Compliance, Ventricular Fibrillation, Death, Sudden, Cardiac, Tachycardia, Ventricular, Defibrillators

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