Incidence of non-hospital cardio-respiratory arrest (ACR) in France is around 40 000 cases per year, with mortality remaining very high, with 75% of patients dying before arrival in hospital. The investigators know some validated predictive factors for recovery of spontaneous cardiac activity (RACS) such as age, no flow (time between ACR and onset of CPR), type of initial electrical activity (FV, TVSP), or the value of CO2 expired. However, the use of these prognostic criteria in the conduct of CPR maneuvering is in practice limited. Lactate is now a well-known prognostic biological marker used in many pathological conditions such as shock states or the severe traumatized patient. Some data have also demonstrated the prognostic value of lactate on morbidity and mortality after ACR after resumption of spontaneous cardiac activity. The hypothesis of our study is that the evaluation of the initial lactate in the early cardiopulmonary resuscitation could be a prognostic factor of RACS.
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venous lactate
Timeframe: at baseline