The perioperative management of aneurysmal subarachnoidal haemorrhage is challenging and often requires an extensive team work. Unfortunately, there is no uniform system applied for perioperative monitoring of patients with subarachnoid haemorrhage. The new developing technology enhances our monitoring capability with subsequent impact on patient's outcome. This article presents a review of current monitoring modalities applicable to patients with subarachnoid haemorrhage with emphasis on the central nervous system and some of the authors' experience.