In general, gastroscopy takes about 15 minutes and colonoscopy about 30 minutes. However, the exact time depends on the skillfulness of the physician, the degree of cooperation of the patient and the severity of the disease.
Gastroscopy can visually and clearly observe the mucosa of the esophagus, stomach and part of the duodenum of the patient, and assist in the diagnosis of chronic gastritis, peptic ulcer and tumors of the esophagus and stomach. Enteroscopy can clearly and intuitively observe the mucosa of the colorectum and part of the end of the ileum, and assist in the diagnosis of inflammatory bowel disease, ischemic bowel disease and colorectal tumors and other diseases.
During the examination, patients should take the initiative to cooperate with the examination, and if it is a painless gastroenteroscopy, it takes a certain amount of time for anesthesia to be carried out in the early stage, but when the patient is painless, it is better to operate and the operation time will be shortened.
In the process of gastroenteroscopy, if found clear lesions can be biopsy forceps forceps lesion tissue, sent to the pathology examination, to further assist in the nature of the lesion as well as the severity of the determination.
Patients should be fasted and dehydrated before the examination, and the bowel should be completely emptied for colonoscopy. On the day after the examination, patients should eat easy-to-digest food, and try to choose light and soft food, and prohibit spicy and stimulating food.
Specific examination methods and examination time need to consult a specialized doctor.