Key result
Radiographic left atrial dimension and left atrial width correlated significantly with echocardiographic LA/Ao ratio (P<0.01) in dogs with myxomatous mitral valve disease.
Why the study?
The study was conducted to evaluate the utility of four radiographic methods for assessing cardiomegaly and left atrial enlargement in dogs with myxomatous mitral valve disease.
Do radiographic measurements (VHS, VLAS, RLAD, LA Width) reliably detect left atrial enlargement compared to echocardiography in dogs with MMVD?
Cross-Sectional (n=31)
No
Do radiographic measurements (VHS, VLAS, RLAD, LA Width) reliably detect left atrial enlargement compared to echocardiography in dogs with MMVD?
p-value: p=<0.01
Radiographic indices including VLAS, RLAD, and LA Width correlate significantly with echocardiographic measurements and can serve as reliable alternatives for detecting left atrial enlargement in dogs with MMVD.
May support radiographic LA screening in dogs with MMVD when echocardiography is limited; leaves open prospective validation for clinical use.
Aim: To evaluate the utility of four radiographic methods for assessing cardiomegaly and left atrial enlargement in dogs with myxomatous mitral valve disease (MMVD) Study Design: Thirty-one client owned dogs with varying severity of mitral valve disease were subjected to thoracic radiography and echocardiography. Place and Duration of Study: Department of Veterinary Surgery and Radiology, DGCN College of Veterinary and Animal Sciences, between July 2023 to July 2024 Methodology: Thirty-one dogs with varying MMVD severity underwent thoracic radiography and echocardiography. Vertebral heart size (VHS), vertebral left atrial size (VLAS), radiographic left atrial dimension (RLAD), and left atrial (LA) Width were measured and compared with echocardiographic parameters. Results: Radiographic indices (VHS, VLAS, RLAD, and LA Width) increased progressively with MMVD stage (B1, B2, and C). RLAD, and LA Width correlated significantly with echocardiographic LA/Ao ratio (P < 0.01). VHS, VLAS, and LA Width were easier to measure than RLAD. Conclusion: Radiographic VLAS, RLAD, and LA Width are reliable alternatives to echocardiography for identifying left atrial enlargement in MMVD-affected dogs, with VHS offering utility when other measures are unavailable.
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Bodh et al. (2024) conducted a cross-sectional in Myxomatous mitral valve disease (MMVD) (n=31). Thoracic radiography (VHS, VLAS, RLAD, LA Width) vs. Echocardiography was evaluated on Correlation of radiographic indices with echocardiographic LA/Ao ratio (p=<0.01). Radiographic left atrial dimension and left atrial width correlated significantly with echocardiographic LA/Ao ratio (P<0.01) in dogs with myxomatous mitral valve disease.
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