Ventilatory Parameters in Acute Neurological Injury

The goal of this observational study is to test the association between baseline ventilatory parameters (in particular mechanical power (MP), mechanical power normalized to predicted body weight (MP/PBW) and driving pressure (DP) with the baseline neurological status (assessed through the Glasgow coma score) in adults patients under mechanical ventilation with acute neurological injury secondary to stroke, brain trauma or subarachnoid hemorrhage. The main question\[s\]it aims to answer are: 1. In patients with acute neurological injury under mechanical ventilation, is there a correlation between the acute neurological injury, assessed using the Glasgow scale on admission, and baseline ventilatory parameters? 2. In patients with acute neurological injury under mechanical ventilation, are the baseline ventilatory parameters altered at baseline?

Inclusion Criteria: Acute neurological injury in patients ≥ 16 years of age with requiring mechanical ventilation for neurological causes and without baseline lung injury, defined as: normal chest x-ray and adequate oxygenation; PaO2/FiO2 ≥ 300.Neumovent TS and Neumovent Advance respirators will be used. \- Exclusion Criteria: Pneumothorax, or a pleural drainage tube. Hemodynamic instability (mean blood pressure ≤ 65 mmHg) or high doses of inotropes (Norepinephrine \> 0.5 gammas/kilo/minute or equivalent). PaO2/FiO2 \< 80 mmHg. Chronic obstructive pulmonary disease (COPD). Pregnant