Gastroscopy in the afternoon is performed 6 hours in advance with fasting and water, if there is a delay in gastric emptying, a prolonged period of fasting is required.
Gastroscopy is performed through a tube with a lens that is inserted into the esophagus and stomach to examine diseases of the upper gastrointestinal tract, including the esophagus, stomach, and duodenum. Before gastroscopy, fasting and water fasting for 6 hours is required to ensure that the stomach contents are emptied.
On the one hand, it can ensure the field of view in the stomach, avoiding the food residue blocking the field of view of the gastroscope or adhering to the stomach wall, which affects the observation effect and is not easy to detect and diagnose the disease.
On the other hand, the process of perfecting gastroscopy is likely to trigger the examinee’s violent nausea and vomiting, and if there are gastric contents, the vomitus may be choked into the trachea, causing aspiration pneumonia or asphyxiation.
Gastroscopy generally requires 6 hours of fasting and water fasting, and other precautions, it is recommended to seek medical attention and under the guidance of a specialized doctor.