Key result
Two-dimensional echocardiography for measuring the left atrial to aortic root index is more sensitive to left atrial enlargement than M-mode, demonstrating an 11% bias between the two methods.
Why the study?
Does 2-D echocardiography provide a more sensitive index for left atrial enlargement compared to M-mode in cavalier King Charles spaniels?
Population
166 cavalier King Charles spaniels
Comparison
Two-dimensional echocardiographic measurement of… vs Standard M-mode echocardiographic measurement
Design
Preclinical
Authors
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May support preferring 2D over M-mode for LA assessment in dogs; leaves open validation before changing practice.
Cross-Sectional (n=166)
Does 2-D echocardiography provide a more sensitive index for left atrial enlargement compared to M-mode in cavalier King Charles spaniels?
Effect estimate: 11% bias
Two-dimensional echocardiography provides a more sensitive index for detecting left atrial enlargement than standard M-mode in dogs with mitral regurgitation.
Hansson et al. (2002) conducted a cross-sectional in Mitral regurgitation secondary to chronic valvular disease (n=166). Two-dimensional (2-D) echocardiography vs. M-mode echocardiography was evaluated on Difference (bias) between 2-D and M-mode indices for left atrial size (LA/AO) (11% bias). Two-dimensional echocardiography for measuring the left atrial to aortic root index is more sensitive to left atrial enlargement than M-mode, demonstrating an 11% bias between the two methods.
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