This will commence as soon as possible once all formalities as described above are cleared. Normally in cases of the operation or in combination with pain surgery it may be necessary to begin treatment a few days before the planned date of the operation. . Please Note: If your case involves operation etc, on the operation day, you should be in a fasting state. You should not eat, drink or smoke starting from 10 hours before the operation. Further info will be given to you during the pre-operation discussion. For more complex operations or an operation with special existing conditions, the anaesthetist will take into consideration your current state of health and will determine the most suitable anaesthetic for you. The anaesthetist will discuss everything with you before the operation.