Temporal Trends in Coverage of Historical Cardiac Arrests Using a Volunteer-Based Network of Automated External Defibrillators Accessible to Laypersons and Emergency Dispatch Centers

Carolina Malta Hansen; Freddy Knudsen Lippert; Mads Wissenberg; Peter Weeke; Line Zinckernagel; Martin H Ruwald; Lena Karlsson; Gunnar Hilmar Gislason; Søren Loumann Nielsen; Lars Køber; Christian Torp-Pedersen; Fredrik Folke

doi:10.1161/circulationaha.114.008850

Temporal Trends in Coverage of Historical Cardiac Arrests Using a Volunteer-Based Network of Automated External Defibrillators Accessible to Laypersons and Emergency Dispatch Centers

Carolina Malta Hansen, Freddy Knudsen Lippert, Mads Wissenberg, Peter Weeke, Line Zinckernagel, Martin H Ruwald, Lena Karlsson, Gunnar Hilmar Gislason, Søren Loumann Nielsen, Lars Køber, Christian Torp-Pedersen, Fredrik Folke

Department of Clinical Medicine

60 Citations (Scopus)

Abstract

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.

Original language	English
Journal	Circulation
Volume	130
Issue number	21
Pages (from-to)	1859-67
Number of pages	9
ISSN	0009-7322
DOIs	https://doi.org/10.1161/circulationaha.114.008850
Publication status	Published - 18 Nov 2014

Keywords

Adult
Aged
Aged, 80 and over
Cohort Studies
Community Networks
Defibrillators
Denmark
Electric Countershock
Emergency Medical Services
Female
Humans
Male
Middle Aged
Out-of-Hospital Cardiac Arrest
Prospective Studies
Retrospective Studies
Time Factors
Volunteers

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10.1161/circulationaha.114.008850

https://www.ahajournals.org/doi/pdf/10.1161/CIRCULATIONAHA.114.008850

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Hansen, C. M., Lippert, F. K., Wissenberg, M., Weeke, P., Zinckernagel, L., Ruwald, M. H., Karlsson, L., Gislason, G. H., Nielsen, S. L., Køber, L., Torp-Pedersen, C., & Folke, F. (2014). Temporal Trends in Coverage of Historical Cardiac Arrests Using a Volunteer-Based Network of Automated External Defibrillators Accessible to Laypersons and Emergency Dispatch Centers. Circulation, 130(21), 1859-67. https://doi.org/10.1161/circulationaha.114.008850

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 et al.
In: Circulation, Vol. 130, No. 21, 18.11.2014, p. 1859-67.

Research output: Contribution to journal › Journal article › Research › peer-review

Hansen, CM, Lippert, FK, Wissenberg, M, Weeke, P, Zinckernagel, L, Ruwald, MH, Karlsson, L, Gislason, GH, Nielsen, SL, Køber, L , Torp-Pedersen, C & Folke, F 2014, 'Temporal Trends in Coverage of Historical Cardiac Arrests Using a Volunteer-Based Network of Automated External Defibrillators Accessible to Laypersons and Emergency Dispatch Centers', Circulation, vol. 130, no. 21, pp. 1859-67. https://doi.org/10.1161/circulationaha.114.008850

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title = "Temporal Trends in Coverage of Historical Cardiac Arrests Using a Volunteer-Based Network of Automated External Defibrillators Accessible to Laypersons and Emergency Dispatch Centers",

abstract = "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.",

keywords = "Adult, Aged, Aged, 80 and over, Cohort Studies, Community Networks, Defibrillators, Denmark, Electric Countershock, Emergency Medical Services, Female, Humans, Male, Middle Aged, Out-of-Hospital Cardiac Arrest, Prospective Studies, Retrospective Studies, Time Factors, Volunteers",

author = "Hansen, {Carolina Malta} and Lippert, {Freddy Knudsen} and Mads Wissenberg and Peter Weeke and Line Zinckernagel and Ruwald, {Martin H} and Lena Karlsson and Gislason, {Gunnar Hilmar} and Nielsen, {S{\o}ren Loumann} and Lars K{\o}ber and Christian Torp-Pedersen and Fredrik Folke",

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doi = "10.1161/circulationaha.114.008850",

language = "English",

volume = "130",

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journal = "Circulation",

issn = "0009-7322",

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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

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

SN - 0009-7322

VL - 130

SP - 1859

EP - 1867

JO - Circulation

JF - Circulation

IS - 21

ER -

Temporal Trends in Coverage of Historical Cardiac Arrests Using a Volunteer-Based Network of Automated External Defibrillators Accessible to Laypersons and Emergency Dispatch Centers

Abstract

Keywords

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