Gastroscopy requires a laxative to be taken four to six hours before the test and taken within two hours.
Gastroscopy is a test in which a gastroscope is inserted through the mouth into the esophagus, stomach, duodenum, and other parts of the body, and the area it passes through is observed for lesions. Gastroscopy is a test in which a colonoscope is inserted through the anus into the rectum, colon, etc., and the area it passes through is observed for the presence of lesions.
Before the colonoscopy, you will need to take intestinal cleansing medication, such as compound polyethylene glycol electrolyte powder, as prescribed by your doctor. Typically, about 2 liters of a solution of cotrimoxazole is started and taken within two hours, four to six hours before the colonoscopy.
After taking it, if the intestinal emptying meets the criteria for the examination, you can proceed; if it does not meet the criteria for the examination, you will need to take an additional dose. Therefore, before checking gastroenteroscopy, you must take the bowel emptying drugs according to the doctor’s prescription, and it is not recommended to take them by yourself, so as not to affect the examination effect.