Friend, the concern would be a possible obstruction by the gauze. For this reason, I would recommend you try to induce vomiting with peroxide. To induce vomiting this is what you can do:
1- Give him 1 tablespoon of hydrogen peroxide orally to induce vomiting.
2- Allow him to walk for a minute and move his belly to mix stomach content with peroxide. If he does not vomit within 5-10 minutes, repeat it again. Can give a total of 3 times 5-10 minutes apart.
3- If he does not vomit or you do not see the gauze in the vomit change his diet for the next 2-3 days to rice (75%) and boiled boneless chicken or ground beef (25%). The idea is for the rice to help pass the gauze in the feces. Make sure you check the stool for the gauze, if you don't find it within 48 hours I would have him checked by your family veterinarian.
4- If at any point you see the following symptoms: lethargy, anorexia, vomiting, constipated or diarrhea, etc. follow up immediately with a veterinarian. These are all signs of a possible obstruction of the intestinal tract. In the meantime, observe and change diet as above then wean back into regular diet.
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