an adult nasogastric (NG tube) are placed while you are in bed. It goes through your nose and down into your stomach. You will have an x-ray of your chest and stomach to make sure the tube is in place.
a feeding tube insertion may be done in part using a procedure called endoscopy. This is a way of looking inside the body using a flexible tube with a small camera on the end of it. The endoscope is inserted through your mouth and down your esophagus, which leads to the stomach.