• Lucile Noel, Deborah Jaeger, Valentine Baert, Guillaume Debaty, Michael Genin, Sonia Sadoune, Adrien Bassand, Karim Tazarourte, Pierre-Yves Gueugniaud, Carlos El Khoury, Hervé Hubert, Tahar Chouihed, and GR-RéAC.
• Emergency Department, University Hospital of Nancy, France.
• Resuscitation. 2019 Nov 1; 144: 91-98.

AimCardiac arrest (CA) was considered irreversible until 1960, when basic cardiopulmonary resuscitation (CPR) was defined. CPR guidelines include early recognition of CA, rapid and effective CPR, effective defibrillation strategies and organized post-resuscitation to ensure a strengthening of the survival chain. Bystanders are the key to extremely early management, which is associated with the early medical care provided by EMS. This study aims to assess the prognosis of a bystander's cardiac CPR when it is initiated by the Dispatch Centre (DC).MethodsWe included patients in 3 groups according to who initiated the CPR. The groups were matched according to multiple propensity partition methods. We presented our results in terms of 30-day survival and neurological prognosis.Results85,634 patients were included. Statistical study focused on 18,185 patients once the exclusion criteria were applied. 12,743 (70.1%) are men and the average age is 70.1 years. Survival at D30 was 5.11% in the absence of CPR, 8.86% with bystander initiation and 7.35% with DC initiation (p < 0.001). Survival at D30 with favourable neurologic prognosis (CPC 1-2) was 76.30%, 83.69% and 82.82%, respectively. Our results show a 3.75% increase in the chance of survival at D30 if CPR was initiated by bystanders compared to patients for whom CPR was not initiated, a 2.25% increase in survival in the group that received from CPR initiated by the DC compared to the group that did not receive CPR.ConclusionsBystander CPR initiated by the DC represents a suitable option following out-of-hospital cardiac arrest.Copyright © 2019 Elsevier B.V. All rights reserved.

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