A colonoscopy can be defined as a test which is used to abnormalities or changes occurring in the large intestine that is colon and rectum. During this procedure a long tube is inserted into the rectum. A small video camera at the tip of the detecting tube is used to view inside the entire colon.
In colonoscopy a moderate sedative is required to keep the patient in the unconscious state. A depressed level of consciousness is required for this treatment in which the patient losses alertness, becomes lethargic, can be aroused with little difficulty.
