What is the proper placement depth of a NG/feeding tube on a chest x-ray?

The proper placement depth of a nasogastric (NG) or feeding tube on a chest X-ray is typically seen as being 2-5 cm below the diaphragm. This placement ensures that the tip of the tube is in the stomach, where it can effectively deliver nutrition or medications. When the tube is positioned within this range, it minimizes the risk of accidental placement into the lungs, which can lead to aspiration and associated complications.

In contrast, placement at the level of the heart could imply improper positioning, as it does not indicate whether the tube has descended into the stomach. Similarly, being 5-10 cm below the diaphragm may indicate an excessively deep placement, risking entry into the duodenum instead of remaining in the stomach. Positioning the tube at the level of the esophagus similarly does not provide adequate information about its correct placement within the gastrointestinal tract. The specified depth of 2-5 cm below the diaphragm is clinically validated to optimize safe and effective feeding and airway protection.