Before the colonoscopy, the bowel should be cleansed by diet and laxatives until yellow watery or clear watery stools are discharged.
1. Diet: 1 day before the colonoscopy, the diet should be low in slag, easy to digest food, such as thin rice, noodles, etc. Do not eat high-fiber foods, such as celery, tomatoes, etc.. People with a history of constipation are advised to adjust their diet from 2 to 3 days before the examination. Fasting is also required on the day of the test.
2. Laxatives: 6~10 hours before the examination, you can also take laxatives under the guidance of the doctor to empty the intestines, commonly lactulose, compound polyethylene glycol, sodium phosphate, mannitol, etc. It is recommended to take at least two times, with an interval of 4 hours. Large amounts of water can be consumed while taking the medication to promote bowel movements to a clear watery consistency.
It should be noted that not all people can undergo colonoscopy. People with severe high blood pressure, coronary heart disease, cardiopulmonary insufficiency should not be examined, and women should not undergo colonoscopy during menstruation.