What color is the drainage from an nasal gastric tube?

The color of the drainage from a nasogastric (NG) tube can vary depending on the contents of the stomach. Here are a few possible colors and their significance:

1. Clear or Pale Yellow: This is usually normal drainage and may consist of saliva, gastric secretions, and small amounts of food particles.

2. Greenish-Yellow or Brownish-Yellow: This may indicate the presence of bile from the small intestine. It can be caused by gastrointestinal reflux or a partial obstruction in the small bowel.

3. Red or Pink: This can be a sign of bleeding from the upper gastrointestinal tract, such as the esophagus, stomach, or small intestine. It requires immediate medical attention.

4. Dark Brown or Black: This may indicate the presence of old blood, which has undergone chemical changes in the stomach. It can also be a sign of bleeding from the upper GI tract, but is not as urgent as fresh bleeding.

5. Cloudy White: This may be due to the presence of milk, cream, or other fatty substances in the stomach.

6. Dark Green or Black: This could be a sign of intestinal ischemia or necrosis. It requires urgent medical attention.

It's important to note that the color of the drainage alone is not sufficient to diagnose a medical condition. Other factors such as the patient's symptoms, medical history, and laboratory tests are necessary for an accurate diagnosis. If you notice any unusual color or consistency in the drainage from an NG tube, it's best to consult a healthcare professional promptly.