What is one of the three types of gastrointestinal intubation?

One of the three types of gastrointestinal intubation is the Levin tube, which is a type of nasogastric (NG) tube used for various medical purposes including feeding, medication administration, and gastric decompression. The Levin tube is characterized by its single lumen design and is inserted through the nose, down the esophagus, and into the stomach. This method allows for the direct management of intestinal contents in situations such as bowel obstruction or when a patient is unable to eat orally.

Other terms in the options refer to different medical procedures or instruments. For instance, Billroth refers to surgical procedures related to the stomach (specifically, partial gastrectomies), while cholecystectomy denotes the surgical removal of the gallbladder. Colonoscopy is a diagnostic procedure used to visualize the inside of the colon. These are not classifications of gastrointestinal intubation but rather different types of surgical or diagnostic interventions in the gastrointestinal field.