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KMID : 1094020140310050403
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Journal of Veterinary Clinics
2014 Volume.31 No. 5 p.403 ~ p.406
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Double-chambered Right Ventricle with Intact Ventricular Septum in a Maltese Dog
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Kang Jong-il
Lee Seung-Gon
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Abstract
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A 6-year-old female Maltese (body weight, 3.1 kg) without clinical signs was referred for further evaluationof the cause of cardiac murmur. Thoracic radiography revealed right-sided cardiomegaly. Echocardiography showedmarked hypertrophic remodeling of the right ventricular free wall and an anomalous muscular bundle and fibrous nodulenear the subinfundibular portion of the right ventricular outflow tract (RVOT), indicating a double-chambered rightventricle (DCRV). The turbulent flow from the anomalous muscular bundle to the main pulmonary artery was 4.6 m/sec, in addition to the tricuspid valvular regurgitation of 4.4 m/sec and main pulmonary artery flow of 1.1 m/sec. Thedog is receiving atenolol (0.5 mg/kg) to minimize the deleterious cardiac effects of the high afterload, even thoughshe remains asymptomatic. This report describes a case of DCRV, a rare congenital heart disease in dogs in South Korea.
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KEYWORD
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double chambered right ventricle, pulmonic stenosis, congenital heart disease, anomalous muscular bundle, and tricuspid regurgitation.
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