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Breeds at increased risk for congenital shunts include Cairn Terriers, Yorkshire Terriers, Maltese, Irish Wolfhounds, Himalayans and Persians. An acquired shunt can develop in any breed and is usually caused by liver problems due to toxins, hepatitis, infections, inflammation, etc.
Symptoms of a liver shunt include stunted growth, weight loss, vomiting, diarrhea, lethargy, unresponsiveness, seizures, disorientation, poor skin and coat, excessive drinking and urination. Some pets will have a single sign and some with have several.
The diagnosis is made with blood tests, urinalysis and imaging tests (radiographs and/or ultrasounds). A liver function test called bile acids is usually very suggestive for a liver shunt when the values are very high. Another diagnostic test that can be performed is nuclear scintigraphy, which must be done at a referral specialty facility. Yet another possible diagnostic test that can be performed is a CT scan.
The treatment and how well the pet responds are dependent on many things including the location and severity of the shunt. Some pets will do well for long periods of time with medical management only. Medical management includes a low protein diet, antibiotics and lactulose. Surgical repair is commonly done for congenital shunts and again the success is dependent on the location and severity of the shunt.
I love this veterinary clinic. Dr. Sheehy and staff are all friendly and seem to take pride in their jobs. I enjoy taking my three rats there and would recommend them to everyone I know.