Objectives: To investigate the impact of NIRS directed optimal cerebral perfusion pressure on the outcome of aSAH patients. Study design: A multicenter, single-blinded, randomized controlled trial. Setting: Departments of critical care medicine of tertiary hospitals in China. Patients: 150 aSAH patients (≥ 18 years old) who admitted to ICU (predicted ICU duration time ≥ 24 hours) Intervention: Patients with aSAH will be randomly divided into the control group and the intervention group. The control group will follow the SAH guidelines. The intervention group will be given continuous NIRS and invasive blood pressure monitoring at same time. The correlation curve between the brain oxygenation index or the brain hemoglobin index (ORI/THx) and the blood pressure will be obtained through continuous monitoring. According to the correlation curve, the optimal blood pressure will be determined which provides the optimal CPP. Then the goal of blood pressure (within 5 mmHg of CPPopt) will be maintained as the target of blood pressure management for the intervention group during ICU stay. Primary outcome: Neurological prognosis (GCS score，GOS score, and NIHSS score when discharge from ICU; GOS score at 6 months), etc. Predicted duration of the study: 2 years.
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Neurological prognosis at the discharge from ICU and at 6 months
Timeframe: 6 months