To prepare for gastric decompression, have the suction device and collection container connected to the suction source. The suction source is typically a stationary wall-mounted suction machine. The typical suction device has an on/off switch, a suction setting (intermittent or continuous), and a variable power dial to set the amount of suction. Portable suction machines are also available to provide intermittent suction. They usually have only an on/off switch and a high/low power switch. Verify the amount of suction prescribed. Following the placement and verification of the tube’s position, insert a tapered adapter to connect the nasogastric tube to the suction tubing. Don gloves, then connect the proximal end of the nasogastric tube to the distal end of the suction tubing.