The article presents two case studies of 60-year-old male patients with acute subarachnoid hemorrhage. They were scheduled to undergo clipping of left middle cerebral artery bifurcation aneurysms and anterior communicating artery aneurysm respectively under general anaesthesia. It discusses the technique of placing a negative pressure (NP) subgaleal drain to allow evacuation of possible bleeding following craniotomy. with the help of the NP Romovac apparatus in both the cases.