2.2. Patients
melena, chronic kidney disease
INFLAMMATORY BOWEL DISEASE, HEMATOCHEZIA, MELENA, INTESTINAL STENOSIS, HEART FAILURE, DRUG ALLERGY
Patients older than 19 years who were hospitalized for colonoscopy examination for screening or post-polypectomy surveillance at the digestive endoscopy center of Kosin University Gospel Hospital were included. Exclusion criteria are as follows: under 19 years of age, pregnant women, requiring emergency colonoscopy due to hematochezia, melena and obstruction, changes in alimentary tract due to previous surgery, inflammatory bowel disease, suspected intestinal stenosis, bowel preparation, conditions predicted to fail bowel preparation. Patients with issues regarding the side effects of PEG and simethicone (chronic kidney disease, heart failure, history of drug allergy, etc) were also excluded.