Less than half of the patients suffering from sudden cardiac arrest arrive at the hospital alive. Within these survivors less than half will be discharged alive from the hospital without being severely disabled. The most frequent cause of death during the first 24 hours since admission to the hospital is related to cardiovascular instability and failure. In the early phases of ROSC patients are hemodynamically unstable and management for out of hospital cardiac arrests relies on few non invasive measurements such as non invasive blood pressure, SatO2, EtCO2 and continuous ECG. Recent technological advances allow continuous non invasive evaluation of response to fluid challenge in mechanically ventilated patients through the pleth variability index. The investigators hypothesize that early goal directed therapy based on non invasive measurement of the pleth variability index on top of conventional non-invasive monitor during the initial care in the Emergency Department can improve the hemodynamic status of the participants, increase lactate clearance and reduce fluid balance at 48 hours post arrest. Objectives: * To determine whether an early goal directed management based on the pleth variability index on top of standard non invasive hemodynamic monitoring could improve the hemodynamic status of patients post cardiac arrest especially in terms of increase in lactate clearance and reduced fluid balance. Neurological outcome will be investigated.
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Change of lactate
Timeframe: From ED admission until 6 hours from admission with 1 predefined time point at 3 hours from ED admission