Before giving an enema to an adult for surgery, there may be uncomfortable symptoms, such as abdominal distension, abdominal pain or the feeling of wanting to have a bowel movement, which are normal phenomena; if there is a pale face, cold sweat, panic and shortness of breath, and other more serious symptoms, you should signal the nurse to stop the enema as soon as possible. When the enema feel slightly uncomfortable, such as abdominal pain and bloating, you can tell the nurse, the nurse will promptly according to the situation of the flow rate adjustment or enema cylinder height adjustment, if panic, shortness of breath and other symptoms, if necessary, stop the enema. At the same time, patients can breathe with their mouths open to reduce discomfort to a certain extent. Enema is to fully expose the anus, the lubricated anus tube inserted into the rectum 7-10cm, so that the enema liquid slowly into the rectum, the end of the enema should generally try to retain 10 minutes, so that the enema liquid can be sufficiently soften the feces. Enema before surgery is to prepare for surgery, can effectively clean the intestinal tract, expose the surgical field of vision, reduce postoperative complications and other effects. Patients do not need to be overly anxious, to be psychologically prepared, to maintain a relaxed state to cooperate with the nurse, and to tell the nurse in time when discomfort occurs.