Document Detail

Method for determining automatic external defibrillator need at mass gatherings.
MedLine Citation:
PMID:  15919567     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: A method for determining the number of automatic external defibrillators (AEDs) required for a 3-min response at mass gatherings has been described previously. Our study sought to modify the method, replicate it, then validate the results. METHODS: Emergency medical technicians (EMTs) were timed walking defined courses in a football stadium. Velocities were obtained for a horizontal distance and ascending/descending upper and lower decks. This was replicated in a basketball arena. To validate, actual response times were compared to predicted times for predetermined distances in each venue. Predicted response times were calculated using the second standard deviation velocities as the most pessimistic. Numbers of AEDs needed were calculated using predicted response times for each venue's longest distance. RESULTS: Average velocities in m/s (football) were horizontal 1.7, lower deck 1.6 ascending and 1.4 descending, upper deck 1.0 ascending and 1.1 descending. Average velocities (basketball) were horizontal 1.7, lower deck 1.2 ascending and descending, upper deck 0.9 ascending and descending. In the validation phase, every EMT completed the four predetermined courses within the predicted intervals. Predicted response times were 363 s for the longest football stadium distance, and 187 s for the basketball arena. For a 3-min (180 s) response, the number of AEDs required can be calculated. CONCLUSION: This method was easily replicated and appears to be useful for determining the number of AEDs at mass gatherings. The number of AEDs needed for any desired response interval can be calculated using the predicted response time for the longest distance within an arena.
Tracy M Motyka; James E Winslow; Kelly Newton; Jane H Brice
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Publication Detail:
Type:  Journal Article; Validation Studies     Date:  2005-01-21
Journal Detail:
Title:  Resuscitation     Volume:  65     ISSN:  0300-9572     ISO Abbreviation:  Resuscitation     Publication Date:  2005 Jun 
Date Detail:
Created Date:  2005-05-27     Completed Date:  2005-09-29     Revised Date:  2009-08-25    
Medline Journal Info:
Nlm Unique ID:  0332173     Medline TA:  Resuscitation     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  309-14     Citation Subset:  IM    
University of North Carolina Hospitals, Chapel Hill, NC, USA.
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MeSH Terms
Advanced Cardiac Life Support / instrumentation*
Defibrillators / utilization*
Electric Countershock / instrumentation*
Heart Arrest / therapy
Middle Aged
Models, Theoretical
Needs Assessment*
Public Facilities
Time Factors
Time and Motion Studies*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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