 Continuous cardiovascular monitoring as part of management of high-risk surgical patients is widely practiced, however its role in low-risk surgical patients is unclear. Detailed monitoring of cardiovascular parameters from pre-induction stage allows clinicians to individualise anaesthetic management in the perioperative period. The investigators aim was to investigate haemodynamic and Bispectral Index BIS changes in healthy patients undergoing surgery following induction of anaesthesia with propofol using a continuous non-invasive blood pressure device LiDCOrapidTM. 