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Percutaneous Balloon Dilation in Two Dogs with Cor Triatriatum Dexter
Valentina Patata1, Tommaso Vezzosi2, Giulia Calogero3
1Anicura Istituto Veterinario Novara, Strada Provinciale 9, Granozzo con Monticello, 28060 Novara, Italy.
Veterinary Sciences
|August 25, 2022
Summary
This study demonstrates successful percutaneous balloon dilation for cor triatriatum dexter (CTD) in two dogs. Both dogs recovered well and remained symptom-free two years post-procedure, highlighting a minimally invasive treatment option for this cardiac anomaly.
Area of Science:
- Veterinary Cardiology
- Interventional Cardiology
- Canine Cardiac Disease
Background:
- Cor triatriatum dexter (CTD) is a rare congenital heart defect in dogs.
- CTD can lead to clinical signs such as ascites due to obstruction of venous return.
- Surgical intervention for CTD has historically been invasive.
Observation:
- Two dogs, a Rhodesian Ridgeback and an American Staffordshire Terrier, presented with ascites secondary to CTD.
- CTD morphology varied, with different coronary sinus entry points into the anomalous chamber.
- Neither dog exhibited jugular venous distension or pleural effusion.
Findings:
- Percutaneous balloon dilation was successfully performed in both canine patients.
- The procedure effectively addressed the obstructive membrane in CTD.
- Both dogs experienced uneventful surgical recoveries.
Implications:
- Percutaneous balloon dilation offers a minimally invasive and effective treatment for canine cor triatriatum dexter.
- This technique provides a positive long-term prognosis, with sustained clinical improvement.
- Successful dilation reduces the need for more invasive surgical procedures in affected dogs.

