What preparations are required before a gastrointestinal examination?

Before undergoing gastrointestinal examinations, please note the following: - For upper endoscopy (gastroscopy), fasting is required for at least six hours prior to the procedure, and no water intake is permitted for at least two hours before the examination. - For colonoscopy, bowel-cleansing medications must be taken under your physician’s guidance prior to the procedure. - In the days leading up to either gastroscopy or colonoscopy, maintain a light, easily digestible diet and avoid foods that are difficult to digest—this helps ensure optimal examination conditions and accurate results.