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KMID : 1094020220390060287
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Journal of Veterinary Clinics
2022 Volume.39 No. 6 p.287 ~ p.293
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Assessment of Radiographic Left Atrial Dimension in Maltese Dogs with ACVIM Stage B Myxomatous Mitral Valve Disease
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Lee Song-In
Lee Han-Joon
Song Joong-Hyun
Song Kun-Ho
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Abstract
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Radiographic left atrial dimension (RLAD) is a useful measurement to assess left atrial enlargement in dogs. There are studies on the use of RLAD on various breeds of dogs, but no study on a specific breed with myxomatous mitral valve disease (MMVD). This study was conducted to compare RLAD measurements in Maltese dogs with MMVD ACVIM stage B1 and B2, and also to investigate the correlation of RLAD with the LA:Ao ratio. A total of 29 Maltese dogs were the subjects of this study. Each dog was diagnosed with MMVD ACVIM stage B1 or B2 based on physical examination, thoracic radiography, and echocardiography. The vertebral heart size (VHS), RLAD, LVIDDn, and LA:Ao ratio were measured and compared to evaluate the differences. There were significant differences in the RLAD, LVIDDn, and LA:Ao ratio between dogs with MMVD ACVIM stage B1 and those with stage B2. There was a significant correlation between the LA:Ao ratio and both the RLAD and VHS measurements, but the correlation coefficient was higher for RLAD. The RLAD scores exhibited a significant difference between dogs with ACVIM Stage B1 and with those with B2, and these scores had a higher correlation with the LA:Ao ratio measured by echocardiography than with VHS.
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KEYWORD
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dog, left atrium to aorta ratio, maltese, radiographic left atrial dimension, radiography, vertebral heart size
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