Why is my large dog regurgitating undigested food? What tests?

Question

My 4 Yr old Tibetan Mastiff hs bn throwing up undigested food, especially solids 4a month now.She ws given antibiotic shots & is being given probiotic powder.No proteins allowed. Looks more like regurgitation than vomiting. No bile.Clear slimy liquid. Wants to eat grass all the time.Shes on a liquid diet(soups).There r no adequate veterinary facilities where I am in India. Bt we r planning to tk her 2a city which hopefully wl hv answers.Wht shud we be looking for & what tests do you suggest? TY. Pet's info: Dog | Mixed Breed Large (61lb +) | Female | unspayed | 40 lbs

Sarah Derksen, DVM · Accepted Answer

Hi. Regurgitation differs from vomiting in that the expelled material almost always originates from the esophagus—the tube that moves food, water and saliva from the mouth down into the stomach. Vomiting is preceeded by retching noises, where as regurgitation is a passive event where you only hear a noise as the material comes up. The most common cause of regurgitation is megaesophagus. Megaesophagus is a generalized enlargement of the esophaguswith a decreased to absent motility which is required for moving food and liquid down to the stomach. It is diagnosed most commonly by a lateral x-ray of the chest where the esophagus goes from the beginning of chest area into the stomach. If it is vomiting, it is unfortunately a vague sign that can occur from many possibilitites.  It can be from a dietary indiscretion, a food sensitivity, a GI infection,  pancreatitis, metabolic and endocrine conditions, foreign bodies in the intestines, and more.   The best thing for vomiting would be to get blood work and abdominal x-rays done. Good luck

Why is my large dog regurgitating undigested food? What tests?

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