Temporal Trends in Coverage of Historical Cardiac Arrests Using a Volunteer-Based Network of Automated External Defibrillators Accessible to Laypersons and Emergency Dispatch Centers
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Temporal Trends in Coverage of Historical Cardiac Arrests Using a Volunteer-Based Network of Automated External Defibrillators Accessible to Laypersons and Emergency Dispatch Centers. / Hansen, Carolina Malta; Lippert, Freddy Knudsen; Wissenberg, Mads; Weeke, Peter; Zinckernagel, Line; Ruwald, Martin H; Karlsson, Lena; Gislason, Gunnar Hilmar; Nielsen, Søren Loumann; Køber, Lars; Torp-Pedersen, Christian; Folke, Fredrik.
I: Circulation, Bind 130, Nr. 21, 18.11.2014, s. 1859-67.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Temporal Trends in Coverage of Historical Cardiac Arrests Using a Volunteer-Based Network of Automated External Defibrillators Accessible to Laypersons and Emergency Dispatch Centers
AU - Hansen, Carolina Malta
AU - Lippert, Freddy Knudsen
AU - Wissenberg, Mads
AU - Weeke, Peter
AU - Zinckernagel, Line
AU - Ruwald, Martin H
AU - Karlsson, Lena
AU - Gislason, Gunnar Hilmar
AU - Nielsen, Søren Loumann
AU - Køber, Lars
AU - Torp-Pedersen, Christian
AU - Folke, Fredrik
N1 - © 2014 American Heart Association, Inc.
PY - 2014/11/18
Y1 - 2014/11/18
N2 - BACKGROUND: Although increased dissemination of automated external defibrillators (AEDs) has been associated with more frequent AED use, the trade-off between the number of deployed AEDs and coverage of cardiac arrests remains unclear. We investigated how volunteer-based AED dissemination affected public cardiac arrest coverage in high- and low-risk areas.METHODS AND RESULTS: All public cardiac arrests (1994-2011) and all registered AEDs (2007-2011) in Copenhagen, Denmark, were identified and geocoded. AED coverage of cardiac arrests was defined as historical arrests ≤100 m from an AED. High-risk areas were defined as those with ≥1 arrest every 2 years and accounted for 1.0% of the total city area. Of 1864 cardiac arrests, 18.0% (n=335) occurred in high-risk areas throughout the study period. From 2007 to 2011, the number of AEDs and the corresponding coverage of cardiac arrests increased from 36 to 552 and from 2.7% to 32.6%, respectively. The corresponding increase for high-risk areas was from 1 to 30 AEDs and coverage from 5.7% to 51.3%, respectively. Since the establishment of the AED network (2007-2011), few arrests (n=55) have occurred ≤100 m from an AED with only 14.5% (n=8) being defibrillated before the arrival of emergency medical services.CONCLUSIONS: Despite the lack of a coordinated public access defibrillation program, the number of AEDs increased 15-fold with a corresponding increase in cardiac arrest coverage from 2.7% to 32.6% over a 5-year period. The highest increase in coverage was observed in high-risk areas (from 5.7% to 51.3%). AED networks can be used as useful tools to optimize AED placement in community settings.
AB - BACKGROUND: Although increased dissemination of automated external defibrillators (AEDs) has been associated with more frequent AED use, the trade-off between the number of deployed AEDs and coverage of cardiac arrests remains unclear. We investigated how volunteer-based AED dissemination affected public cardiac arrest coverage in high- and low-risk areas.METHODS AND RESULTS: All public cardiac arrests (1994-2011) and all registered AEDs (2007-2011) in Copenhagen, Denmark, were identified and geocoded. AED coverage of cardiac arrests was defined as historical arrests ≤100 m from an AED. High-risk areas were defined as those with ≥1 arrest every 2 years and accounted for 1.0% of the total city area. Of 1864 cardiac arrests, 18.0% (n=335) occurred in high-risk areas throughout the study period. From 2007 to 2011, the number of AEDs and the corresponding coverage of cardiac arrests increased from 36 to 552 and from 2.7% to 32.6%, respectively. The corresponding increase for high-risk areas was from 1 to 30 AEDs and coverage from 5.7% to 51.3%, respectively. Since the establishment of the AED network (2007-2011), few arrests (n=55) have occurred ≤100 m from an AED with only 14.5% (n=8) being defibrillated before the arrival of emergency medical services.CONCLUSIONS: Despite the lack of a coordinated public access defibrillation program, the number of AEDs increased 15-fold with a corresponding increase in cardiac arrest coverage from 2.7% to 32.6% over a 5-year period. The highest increase in coverage was observed in high-risk areas (from 5.7% to 51.3%). AED networks can be used as useful tools to optimize AED placement in community settings.
KW - Adult
KW - Aged
KW - Aged, 80 and over
KW - Cohort Studies
KW - Community Networks
KW - Defibrillators
KW - Denmark
KW - Electric Countershock
KW - Emergency Medical Services
KW - Female
KW - Humans
KW - Male
KW - Middle Aged
KW - Out-of-Hospital Cardiac Arrest
KW - Prospective Studies
KW - Retrospective Studies
KW - Time Factors
KW - Volunteers
U2 - 10.1161/CIRCULATIONAHA.114.008850
DO - 10.1161/CIRCULATIONAHA.114.008850
M3 - Journal article
C2 - 25274002
VL - 130
SP - 1859
EP - 1867
JO - Circulation
JF - Circulation
SN - 0009-7322
IS - 21
ER -
ID: 135272540