• Korean Journal of Veterinary Service
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• v.40 no.3
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• pp.215-217
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• 2017

A 3-year-old chow chow dog with abdominal distention was referred to the Veterinary Teaching Hospital of Chungnam National University. The dog was diagnosed as Cor triatriatum dexter based on echocardiographic results, which demonstrated an abnormal membrane partitioning the right atrium. Echocardiography also revealed turbulent intra-atrial blood flow between the two chambers of the atrium. The dog was treated with balloon dilatation to enlarge the perforation in the abnormal membrane and to improve blood flow. As a result, although the membrane remained, increased perforation reduced the turbulent intra-atrial blood flow. Clinically the patient improved and eventually was discharged. This case is the first domestic Korean clinical veterinary report on the use of balloon valvuloplasty to treat Cor triatriatum dexter in a dog.

• Journal of Chest Surgery
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• v.19 no.2
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• pp.313-318
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• 1986

A rare anomaly, Cor triatriatum dexter combined with pulmonary stenosis and patent foramen ovale in a 2-years- old female is presented. Abnormal embryologic development of the right sinus venosus valve caused partial membranous septation of the right atrium. Most cases have been recorded at necropsy either as an incidental finding or in association with severe congenital heart disease. In this case, Cor triatriatum dexter was diagnosed preoperatively by cineangiography and echocardiography.

• Korean Journal of Veterinary Research
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• v.64 no.1
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• pp.5.1-5.6
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• 2024

A 6-month-old male Ragdoll cat presented with exercise intolerance. On physical examination, there was a grade 2/6 systolic murmur at the right apex. Diagnostic tests, including SpO₂ measurement, blood tests, radiography, echocardiography, contrast echocardiography, and electrocardiography, were performed. Severe right atrial dilation, tricuspid valve leaflets and orifice displacement, right ventricular atrialization, septal leaflet adherence, anterior leaflet tethering, and right atrioventricular junction dilation were noted on echocardiography, alongside a right-to-left atrial septal defect. Cor triatriatum dexter and left ventricular aneurysm were observed. We diagnosed this case as having Ebstein anomaly with rare congenital heart deformities; which is rare in cats.

• Journal of Veterinary Clinics
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• v.31 no.2
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• pp.112-116
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• 2014

A 2-month-old intact male Pitbull terrier (weighing 1.01 kg) were referred with primary complaints of severe abdominal distension, exercise intolerance, retarded growth, yellow nasal discharge and anorexia. Diagnostic imaging studies found enlarged right atrium partitioned by abnormal membrane, severe pulmonic systolic jets (5.66 m/s of peak velocity) and right-to-left blood shunt at the inter-atrial septum. Based on clinical and diagnostic findings, the case was diagnosed as cor triatriatum dexter complicated with severe pulmonic stenosis and right-to-left shunted patent foramen ovale. Either surgical or interventional therapy has not been attempted, because of unstable patient's condition. Using blood transfusion, oxygen supply and cardiac medications (i.e., sildenafil, spironolactone, enalapril), the dog was recovered.

• Journal of Veterinary Clinics
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• v.37 no.2
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• pp.100-105
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• 2020

A 9-month-old, 11.3 kg, intact, male, mixed-breed dog was referred for treatment of cor triatriatum dexter (CTD); a 5-month-old, 1.9 kg, intact, male Maltese for pulmonic stenosis (PS); and a 3-year-old, 6.62 kg, intact, female West Highland white terrier for esophageal stricture with regurgitation. A balloon catheter intervention was performed in the dog with CTD, and subsequent color Doppler ultrasound and abdominal ultrasound showed normal blood flow across the perforated membrane dividing the right atrium and the disappearance of the severe ascites present before treatment. Balloon catheter intervention in the dog with PS reduced the blood flow through the stenosis from 5.82 m/s to 3.97 m/s. In the dog with esophageal stricture, balloon catheter intervention widened the esophagus and no subsequent regurgitation was observed. Balloon catheter intervention is an interventional radiology procedure that represents a definitive treatment option for various stenotic lesions in dogs, including CTD, PS, and esophageal stricture. Although interventional radiology procedures for these diseases have already been reported, details of procedures and successful outcome have not been reported in Korea.