Gastrointestinal disorders are among the most common problems encountered in feline medicine. Most vomiting and diarrhea episodes occur suddenly and resolve quickly. The causes are usually benign, such as eating an unfamiliar food. However, some patients may have vomiting and/or diarrhea over a period of weeks to months. In the diagnosis of these chronic disorders, the first step is to rule out other causes by using blood tests, stool examinations, x-rays and possibly other tests. Veterinarians will want to ensure that the patient is not suffering from an illness such as chronic kidney failure, pancreatitis, or hyperthyroidism which can also cause vomiting and diarrhea.
When all non-gastrointestinal illnesses are eliminated, the various gastrointestinal disorders need to be considered. Among these are Ollulanus tricuspis (stomach worm infection), Helicobacter infection (a bacterial infection of the stomach), inflammatory bowel disease, colitis, and intestinal lymphoma. Of these, inflammatory bowel disease (IBD) is by far the most common.
IBD is actually a group of gastrointestinal disorders, usually chronic in nature, which are characterized by an increase in the number of inflammatory cells found in the lining of the stomach or intestinal tract. These changes can affect the function of the organ involved. The causes of IBD are variable, and often no single cause can be identified in a given patient. The symptoms include chronic vomiting, diarrhea, or both, and in some cases, weight loss and change in appetite. Some patients may defecate outside their litter box, especially if diarrhea is present. The symptoms may be cyclical in nature, with the cat appearing to be normal at times. These patients may be misdiagnosed as having hairballs.
A definitive diagnosis of IBD is only possible by intestinal biopsy, which is best accomplished using fibreoptic endoscopy. This technology allows veterinarians to diagnose and treat many gastrointestinal disorders more easily than in the past. The endoscope is an instrument that allows visualization of the stomach and intestinal tract through a flexible tube that is passed into either the patient's stomach or colon. The tube contains fibreoptic bundles that deliver bright light to its tip and transmit the images back into an eyepiece. Small, but adequate biopsies (about the size of this capital letter "O") can be taken using this instrument, thus avoiding surgery. The procedure is performed under a short general anesthesia with most patients able to return home the same day. Since endoscopic procedures are minimally invasive (there are no surgical wounds to heal) and short in duration, they are less traumatic to the patient and ....[Read complete article]
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Inflammatory Bowel Disease in Cats
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