Your anaesthetist may or may not prescribe a "premedication" (injection, tablets, or medicine) to help you relax and make you drowsy before your operation. On arrival in the operating suite, various monitoring devices such as cardiograph, blood pressure cuff and oximeter (a probe put on your finger to measure the oxygen in the blood) will be attached to you in order to monitor the way your body will react to the anaesthesia and surgery. You will then have one of "General Anaesthesia", 'sedation' or "Regional Anaesthesia", or a combination of these.
For more information please refer to www.allaboutanaesthesia.com.au