Dogs

Dog Portosystemic Shunt Diagnosis and Care

Portosystemic shunts are blood vessel abnormalities that bypass the liver, causing toxin accumulation. Early diagnosis and treatment are critical for affected dogs.

Key Facts

Portosystemic shunts can be congenital (present from birth) or acquired secondary to liver disease
Small breeds including Yorkshire Terriers and Maltese have higher congenital shunt rates
Signs include stunted growth, neurological symptoms, behavior changes and poor condition
Diagnosis involves bile acid testing, ultrasound and CT scan to map blood vessels
Surgical ligation or placement of an ameroid constrictor offers best long-term outcomes

Welfare Considerations

Dogs with untreated portosystemic shunts suffer from hepatic encephalopathy causing confusion, seizures, blindness and behavioral changes. Many owners attribute early signs to personality quirks rather than disease. Welfare improves dramatically with dietary protein restriction as a bridge and definitive surgical treatment where possible.

What You Can Do

Seek veterinary assessment for small breed dogs with stunted growth or neurological signs
Request bile acid testing if a young dog shows behavioral changes or poor development
Feed a low-protein reduced-copper diet as directed by your vet while awaiting surgery
Choose a specialist veterinary surgeon experienced in portosystemic shunt repair
Monitor neurological status closely and seek emergency care during hepatic crises