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Published on: April 29, 2013

Specificity and sensitivity of automated external defibrillator rhythm analysis in infants and children

Elizabeth Atkinson1, Bridget Mikysa, Jeffrey A Conway

  • 1Department of Emergency Medicine, Indiana University, Indianapolis, IN, USA.

Annals of Emergency Medicine
|July 29, 2003
PubMed

Insights

Automated external defibrillator (AED) algorithms, designed for adults, show high accuracy in identifying shockable rhythms in infants and children. This study confirms their effectiveness with both anterior-posterior and sternal-apex lead placements.

Area of Science:

  • Pediatric Critical Care
  • Cardiology
  • Biomedical Engineering

Background:

  • Automated external defibrillator (AED) algorithms are primarily based on adult data.
  • The efficacy of AEDs in discriminating pediatric shockable rhythms is not well-established.
  • Lead placement strategies (anterior-posterior vs. sternal-apex) may influence AED performance in children.

Purpose of the Study:

  • To evaluate the performance of a specific AED algorithm in pediatric patients.
  • To assess the algorithm's accuracy in differentiating shockable from nonshockable rhythms in infants and children.
  • To compare the AED algorithm's effectiveness using anterior-posterior versus sternal-apex lead configurations.

Main Methods:

  • Pediatric patients in critical care, electrophysiology, and cardiac operating rooms were enrolled.
  • ECGs were recorded using standard defibrillation pads and analyzed by a LIFEPAK 500 AED.
  • AED decisions were compared against expert clinician classifications of shockable/nonshockable rhythms to determine sensitivity and specificity.

Main Results:

  • The AED demonstrated high sensitivity (99%) for coarse ventricular fibrillation and high specificity (99.5%) for nonshockable rhythms in 1,561 pediatric rhythm samples.
  • Specificity remained high with both sternal-apex (99.1%) and anterior-posterior (99.4%) lead placements.
  • The algorithm performed accurately across a wide pediatric age range (birth to 7 years).

Conclusions:

  • The evaluated AED algorithm exhibits high sensitivity and specificity in pediatric populations.
  • Both sternal-apex and anterior-posterior lead placements are effective for AED use in infants and children.
  • This supports the reliable use of this AED algorithm in pediatric emergency care.
Abstract

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