Gastric Lavage in Dogs

The veterinarian will first perform a routine diagnostic examination of the canine. Routine testing will include a physical exam, blood work, a urinalysis and possibly a fecal examination. Radiographs and/or an ultrasound of the abdomen may also be taken to establish the presence of gastrointestinal obstruction or abnormality prior to conducting the gastric lavage procedure. 

1. An IV catheter will be placed, preferably in either the right or left front limbs of the dog. An intravenous catheter will allow easy access for fluid therapy and intravenously administered drugs. 
2. The canine will be given a sedative injection and will be intubated with an endotracheal tube, which will allow the veterinary team to provide the dog with oxygen and an anesthetic gas. The cuff of the endotracheal tube will be inflated to prevent gastrointestinal fluids that will be aspirated from the stomach, from entering the lungs. 
3. The patient’s vital signs will be checked and monitored throughout the procedure. 
4. An anti-emetic drug may be administered intravenously at this time to prevent the dog from retching while the tube has been placed. 
5. The dog will be placed in sternal (on the belly) or right lateral (on the side) recumbency, depending on the size of the dog and the vet’s preference. 
6. The orogastric tube will be pre-measured to an appropriate size. The veterinary technician or doctor will place the tube alongside the dog’s body, placing the end of the tube at the last rib. The other end of the tube will then be marked with tape to ensure once the tube is inserted, it will not pass deeper into the digestive system. 
7. The tube will be lubricated and inserted into the dog’s mouth, passing down the esophagus, then into the stomach. 
8. The doctor will confirm that the orogastric tube is properly placed through palpation or simultaneous auscultation. 
9. Warm water will be infused down a funnel and into the orogastric tube. 
10. Using the force of gravity, the exposed end of the orogastric tube will be directed toward a bucket on the floor for the stomach fluids to pour into. 
11. More fluids will be administered and allowed to pour out until the veterinarian feels that stomach has been lavaged. (Usually no more than ten times.)
12. Before the tube is removed, activated charcoal will be passed through the tube. The activated charcoal will bind and “trap” any toxic substance left behind. The lavage process will once again take place to remove the captured toxins and charcoal. 
13. The orogastric tube will be kinked and removed from the dog’s stomach. 
14. The patient will be extubated (removal of endotracheal tube) when the gag reflex returns and allowed to awaken in the recovery area.