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General anesthesia is usually considered safe; however, there are reported cases of patients with distortion of taste and/or smell due to local anesthetics, stroke, nerve damage, or as a side effect of general anesthesia. [46] [47] At the end of surgery, administration of anaesthetic agents is discontinued.
Chemical injury can occur if cleaning solutions such as povidone-iodine (Betadine), chlorhexidine or alcohol are inadvertently spilt into the eye, for example when the face, neck or shoulder is being prepped for surgery. [4] [1] Therefore, the anaesthetist ensures that the eyes are fully closed and remain closed throughout the procedure.
The incidence of life-threatening hypersensitivity reactions occurring during surgery and anesthesia is around one in 10,000 procedures. [1] Severe allergic reactions to anesthetic medications are rare and are usually attributable to factors other than the anesthetic.
Amnesia is desirable during surgery, so general anaesthesia procedures are designed to induce it for the duration of the operation. Sedatives such as benzodiazepines, which are commonly used for anxiety disorders, can reduce the encoding of new memories, particularly in high doses (for example, prior to surgery in order for a person not to recall the surgery). [2]
Anesthesia is a combination of the endpoints (discussed above) that are reached by drugs acting on different but overlapping sites in the central nervous system. General anesthesia (as opposed to sedation or regional anesthesia) has three main goals: lack of movement , unconsciousness, and blunting of the stress response. In the early days of ...
Termination of anesthesia too soon before surgery has finished, due to poor communication; Lack of understanding of offset times of volatile agents; Backflow of induction agent up a giving set; Failure to fill vaporizers (which is the cause of 19% of the cases of AAGA) Under-dosing of induction agent during difficult intubation
Generally, twilight anesthesia causes the patient to forget the surgery and the time right after. It is used for a variety of surgical procedures and for various reasons. Like regular anesthesia , twilight anesthesia is designed to help a patient feel more comfortable and to minimize pain associated with the procedure being performed and to ...
Premedication before chemotherapy for cancer often consists of drug regimens (usually 2 or more drugs, e.g. dexamethasone, diphenhydramine and omeprazole) given to a patient minutes to hours before the chemotherapy to avert side effects or hypersensitivity reactions (i.e. allergic reactions). [citation needed]