What is the difference between lavage and gavage?

Lavage/Gavage: The introduction of a tube into the stomach for diagnostic or therapeutic purposes.

You can use two types of hoses: Salem-sump which is double lumen, plastic and disposable, or rubber/ plastic, disposable sinlge lumen Levin tube.

When you lavage, you administer and siphon back the liquid through the catheter placed in the stomach. (Lavage only lingers then leaves.)

When you gavage you instill - artificially feed through gastric intubation. (Gavage - give, get it!)