Yes, you will need to remove your fentenyl patch before any type of general anesthesia.
Mediastinoscopy is usually performed in a hospital under general anesthesia. Before the general anesthesia is administered, local anesthesia is applied to the throat while an endotracheal tube is inserted.
Most medications given before general anesthesia are either anxiolytics, usually benzodiazepines; or analgesics. Patients in severe pain prior to surgery may be given morphine or fentanyl
As a general rule, you should not eat or drink anything after midnight before your surgery. Under some circumstances, you may be given permission by your anesthesiologist to drink clear liquids up to a few hours before your anesthesia.Source: http://lifelinetomodernmedicine.com/faqs.aspx
As with any operation that is performed under general anesthesia, the patient must not eat or drink anything for six to eight hours before surgery.
A spinal block or general anesthesia may be given before surgery.
The necessary steps of preparation vary depending on the extent of the surgery. For example, if the procedure is short and requires only local anesthesia, no steps are truly necessary. However, if general endotracheal anesthesia is to be used, one should be sure to fast before the surgery.
As a general rule, you should not eat or drink anything after midnight before your surgery. Under some circumstances, you may be given permission by your anesthesiologist to drink clear liquids up to a few hours before your anesthesia.Source: http://lifelinetomodernmedicine.com/faqs.aspx
What do I need to do before surgery?What type of anesthesia will be used?How long will it take to recover from the surgery?When can I expect to return to work and/or resume normal activities?
Before undergoing any surgical procedure, answer these questions: Is the surgery medically necessary?; What are the risks involved in undergoing the surgery?; What type of anesthesia will be used?; What are the risks involved in undergoing the anesthesia? If surgery is NOT medically necessary, explore other alternatives. If the risk of undergoing general anesthesia is too great, explore other forms of anesthesia such as a regional block or local anesthesia.
Local is the easiest if you can hold still
As a general rule, you should not eat or drink anything after midnight before your surgery. Under some circumstances, you may be given permission by your anesthesiologist to drink clear liquids up to a few hours before your anesthesia.Source: http://lifelinetomodernmedicine.com/faqs.aspx#eat
For most gasteroenterologic surgeries, whether laparoscopic or open, preoperative medications are given as well as general anesthesia. Food and drink are not allowed after midnight before the surgery