Draw up 30 mL of warm water into the syringe.

Unclamp the suction tubing near the connection site to instill water.

Place the tip of the syringe in the tube to gently instill warm water.

Place the syringe in the blue air vent of a Salem sump or double-lumen tube.

After instilling the water, hold the end of the NG tube over an irrigation tray.

Observe for return of NG drainage into an available container.