TY - JOUR
T1 - Increased bystander intervention when volunteer responders attend out-of-hospital cardiac arrest
AU - Nielsen, Christian Gantzel
AU - Folke, Fredrik
AU - Andelius, Linn
AU - Hansen, Carolina Malta
AU - Væggemose, Ulla
AU - Christensen, Erika Frischknecht
AU - Torp-Pedersen, Christian
AU - Ersbøll, Annette Kjær
AU - Gregers, Mads Christian Tofte
N1 - Copyright © 2022 Nielsen, Folke, Andelius, Hansen, Væggemose, Christensen, Torp-Pedersen, Ersbøll and Gregers.
PY - 2022/11/4
Y1 - 2022/11/4
N2 - AIM: The primary aim was to investigate the association between alarm acceptance compared to no-acceptance by volunteer responders, bystander intervention, and survival in out-of-hospital cardiac arrest.MATERIALS AND METHODS: This retrospective observational study included all suspected out-of-hospital cardiac arrests (OHCAs) with activation of volunteer responders in the Capital Region of Denmark (1 November 2018 to 14 May 2019), the Central Denmark Region (1 November 2018 to 31 December 2020), and the Northern Denmark Region (14 February 2020 to 31 December 2020). All OHCAs unwitnessed by Emergency Medical Services (EMS) were analyzed on the basis on alarm acceptance and arrival before EMS. The primary outcomes were bystander cardio-pulmonary resuscitation (CPR), bystander defibrillation and secondary outcome was 30-day survival. A questionnaire sent to all volunteer responders was used with respect to their arrival status.RESULTS: We identified 1,877 OHCAs with volunteer responder activation eligible for inclusion and 1,725 (91.9%) of these had at least one volunteer responder accepting the alarm (accepted). Of these, 1,355 (79%) reported arrival status whereof 883 (65%) arrived before EMS. When volunteer responders accepted the alarm and arrived before EMS, we found increased proportions and adjusted odds ratio for bystander CPR {94 vs. 83%, 4.31 [95% CI (2.43-7.67)] and bystander defibrillation [13 vs. 9%, 3.16 (1.60-6.25)]} compared to cases where no volunteer responders accepted the alarm.CONCLUSION: We observed a fourfold increased odds ratio for bystander CPR and a threefold increased odds ratio for bystander defibrillation when volunteer responders accepted the alarm and arrived before EMS.
AB - AIM: The primary aim was to investigate the association between alarm acceptance compared to no-acceptance by volunteer responders, bystander intervention, and survival in out-of-hospital cardiac arrest.MATERIALS AND METHODS: This retrospective observational study included all suspected out-of-hospital cardiac arrests (OHCAs) with activation of volunteer responders in the Capital Region of Denmark (1 November 2018 to 14 May 2019), the Central Denmark Region (1 November 2018 to 31 December 2020), and the Northern Denmark Region (14 February 2020 to 31 December 2020). All OHCAs unwitnessed by Emergency Medical Services (EMS) were analyzed on the basis on alarm acceptance and arrival before EMS. The primary outcomes were bystander cardio-pulmonary resuscitation (CPR), bystander defibrillation and secondary outcome was 30-day survival. A questionnaire sent to all volunteer responders was used with respect to their arrival status.RESULTS: We identified 1,877 OHCAs with volunteer responder activation eligible for inclusion and 1,725 (91.9%) of these had at least one volunteer responder accepting the alarm (accepted). Of these, 1,355 (79%) reported arrival status whereof 883 (65%) arrived before EMS. When volunteer responders accepted the alarm and arrived before EMS, we found increased proportions and adjusted odds ratio for bystander CPR {94 vs. 83%, 4.31 [95% CI (2.43-7.67)] and bystander defibrillation [13 vs. 9%, 3.16 (1.60-6.25)]} compared to cases where no volunteer responders accepted the alarm.CONCLUSION: We observed a fourfold increased odds ratio for bystander CPR and a threefold increased odds ratio for bystander defibrillation when volunteer responders accepted the alarm and arrived before EMS.
KW - bystander interventions
KW - cardiopulmonary resuscitation
KW - defibrillation
KW - out-of-hospital cardiac arrest
KW - volunteer responders
UR - http://www.scopus.com/inward/record.url?scp=85142160363&partnerID=8YFLogxK
U2 - 10.3389/fcvm.2022.1030843
DO - 10.3389/fcvm.2022.1030843
M3 - Journal article
C2 - 36407446
SN - 2297-055X
VL - 9
JO - Frontiers in Cardiovascular Medicine
JF - Frontiers in Cardiovascular Medicine
M1 - 1030843
ER -