Nasogastric intubation is a medical process involving the insertion of a plastic tube (nasogastric tube or NG tube) through the nose, past the throat, and down into the stomach. The nasogastric (NG) tube is a vacuum tube. It is used when a physician desires, the stomach continuously and completely empty/evacuated of swallowed air, swallowed saliva, gastric secretions or fresh blood. It can also be used as a way of controlling or promoting feeding.

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