- Gastric lavage involves the passage of a tube (such as an Ewald tube) via the mouth or nose down into the stomach followed by sequential administration and removal of small volumes of liquid.
- The placement of the tube in the stomach must be confirmed by pH testing a small amount of aspirated stomach contents, or x-ray.
- A gastric lavage is the suctioning of gastric contents through a nasogastric tube to examine the contents for the presence of sputum in patients suspected of having tuberculosis.
- stomach pumping is also helpful in less dire circumstances. It can help relieve pressure in your stomach when it’s backed up with food, fluids or air
- It can also clean out excess bleeding from a hemorrhage. Gastric suctioning also plays a role in other common medical procedures.

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