If the gastroenterologist at CARE Hospitals calls the patient for upper endoscopy, the doctor will first give sedation before the procedure to make the patient feel relaxed and sleepy. The patient has to lie on the left side. The doctor passes an endoscope through the mouth and into the esophagus, stomach, and duodenum. The endoscope does not interfere with the breathing of the person. The endoscope blows air into the stomach to expand the folds of tissue which becomes easier for the doctor to examine the stomach entirely. During the entire procedure in the Gastroenterology Hospital in Hyderabad, a patient may feel little or no discomfort.