Key result
Large body size in dogs was associated with significantly decreased systolic indices compared to small and medium dogs, though peak systolic radial strain was unaffected by body weight.
Why the study?
Does body size affect left ventricular contractile indices measured by 2-D speckle-tracking echocardiography in normal dogs?
Population
37 clinically normal adult dogs, allocated into 3 groups based on body weight: small, medium, and large
Comparison
2-D speckle-tracking echocardiography to measure… vs Comparison among small, medium, and large body…
Design
Preclinical
Authors
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Caution against misinterpreting reduced indices as dysfunction in large dogs; leaves open validation of body size-adjusted STE norms.
Cross-Sectional (n=37)
Does body size affect left ventricular contractile indices measured by 2-D speckle-tracking echocardiography in normal dogs?
Decreased systolic indices in large dogs measured by STE should not be interpreted as decreased systolic function, and peak systolic radial strain may be a better body weight-independent variable than fractional shortening.
Takano et al. (2010) conducted a cross-sectional in Clinically normal (n=37). Large body size vs. Small and medium body size was evaluated on Left ventricular contractile indices via 2-D speckle-tracking echocardiography. Large body size in dogs was associated with significantly decreased systolic indices compared to small and medium dogs, though peak systolic radial strain was unaffected by body weight.
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