Studies by Washabau, et al. have shown that in naturally occurring cases of feline megacolon, sections of longitudinal and circular smooth muscle of all parts of. Constipation is defined as the infrequent or difficult evacuation of stool. It is a common problem in cats, may be acute or chronic and does not. Megacolon occurs more frequently in cats than dogs and is usually seen in middle-aged to geriatric cats. The ascending, transverse, and.

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Similar in vitro effects meggacolon been characterized in canine cardiac Purkinje fibers, but in vivo effects have not been reported in dogs and cats. Megacolon and Constipation in Cats. Abdominal radiography should be performed to characterize the mass and verify that it is, indeed, colonic impaction.

The cat may be found straining in the litter box. The conclusion drawn by these workers was that the disorder involves abnormal intracellular activation of smooth muscle myofilaments. Patients refractory to medical therapy may benefit from surgical intervention via subtotal colectomy. Studies by Washabau, et al. Tuberculosis in African Buffalo. Infertility in the Bitch.

Constipation actually refers to a condition in which the time it takes for the ingested food fe,ine travel through the digestive system is prolonged. Systemic signs, most notably vomiting, anorexia, and weight loss, may be observed in patients with prolonged difficulty defecating. Hexachlorophene containing soaps should be avoided in enemas because of potential neurotoxicity.


Family Pet Vet Bond. What are the risk factors for constipation and megacolon in the cat? Cats with a history of chronic constipation refractory to appropriate medical therapies may require surgical intervention. Cisapride Propulsid TMPrepulsid TM is one of the new group of benzamide prokinetic drugs and has been shown, anecdotally, to be beneficial in cases of megacolpn to moderate constipation.

Radiologic Evaluation of Implantation. Treatment of Bleeding Disorders. If the constipation becomes more severe or recurs, the cat usually needs to be hospitalized so the dehydration can be corrected.

Feline Megacolon – WSAVA Congress – VIN

Sodium and Water Balance. There are multiple causes of constipation and megacolon. The resulting disease has diffuse colonic dilatation and hypomotility. Thus failure to resect a significant length of grossly normal-appearing colon may result in therapeutic failure.

Manual extraction of impacted feces is required in patients in which enemas and laxative therapy have not successfully facilitated defecation. Claw and Footpad Diseases.

The cat may defecate outside of the litter box. Lubricant laxatives impede water absorption as well as enabling easier passage of stool. Mineral oil ml PO q24h or petrolatum hairball remedies, ml PO q24h are best suited to mild cases of constipation.

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Megacolon and Constipation in Cats

Profound colonic impaction is a consistent physical examination finding in cats with idiopathic megacolon. Welfare Projects in Asia. Lactulose is a hyperosmotic laxative and is perhaps the most frequently used msgacolon in treating idiopathic megacolon see Box.


No Excuse for Pain. A thorough diagnostic investigation is needed to eliminate other potential causes from the list of diagnostic differentials.

Feline Idiopathic Megacolon

Cats with dysautonomia will have signs referable to other autonomic defects, such as urinary incontinence, regurgitation, mydriasis, prolapse of the nictating membrane and bradycardia. Gastritis in the Cheetah. Pelvic canal stenosis and nerve injury are minor causes in the development of this syndrome. Metabolic causes of constipation, including dehydration, hypokalemia, and hypercalcemia, may be detected in some cats.

Some cats will spend long periods of time simply standing in the litter box or may continue to return to the litter box to try to defecate. Colonic prokinetic agents 1 As long as cellular dehydration is present, the need will exist to resorb water from renal and gastrointestinal systems. Tegaserod Zelnorm, Novartis is a partial non-benzamide agonist at 5-HT 4 receptors and a weak pure agonist at 5-HT 1D receptors on enteric cholinergic neurons. Hyperosmotic laxatives stimulate colonic fluid secretion and propulsive motility.

Low quality food can cause obesity, this would be the most common problem.

Conditions of the Lens. Constipation is defined as the infrequent or difficult evacuation megacollon stool. Because iatrogenic hypothyroidism may be associated with constipation, measurement of basal serum thyroxine concentration is recommended in cats with recurrent constipation after treatment of hyperthyroidism.