adjective, sourer, sourest. 1. having an acid taste, resembling that of vinegar, lemon juice, etc.; tart. 2. rendered acid or affected by fermentation; fermented. 3. producing the one of the four basic taste sensations that is not bitter, salt, or sweet. 4. characteristic of something fermented: a sour smell.
General anesthetics normally are used to produce loss of consciousness before and during surgery. However, for obstetrics (labor and delivery) or certain minor procedures, an anesthetic may be given in small amounts to relieve anxiety or pain without causing unconsciousness.
Certified registered nurse anesthetists are able to administer anesthesia during a surgical procedure, but usually work under the supervision of an anesthesiologist. Types of Anesthesia. There are three main types of anesthesia: local, regional, and general. The type of anesthesia used for a surgical procedure is determined by several factors: 1  Type and length of the surgery. 2  Patient health. 3  Preference of the patient and physician.