Breed-Specific Vertebral Heart Scale for the Dachshund

Area of Science:

• Veterinary Radiology
• Cardiology
• Canine Health

Background:

• The vertebral heart scale (VHS) is a common radiographic assessment for canine cardiac size.
• A generic VHS reference range exists, but breed-specific variations may impact diagnostic accuracy.

Purpose of the Study:

• Determine a breed-specific VHS range for dachshunds.
• Compare dachshund VHS to the established generic canine reference range.
• Evaluate inter-observer variability and correlation with echocardiography.

Main Methods:

• Fifty-one healthy dachshunds underwent thoracic radiography and echocardiography.
• Five observers measured VHS, with data analyzed using statistical methods including ANOVA and correlation analyses.
• Inter-observer reliability was assessed using intra-class correlation coefficients.

Main Results:

• Dachshunds exhibited a median VHS significantly higher than the generic canine reference range.
• Right lateral VHS measurements were significantly greater than left lateral.
• Female dachshunds had significantly higher VHS than males, with high observer consistency (ICC=0.95).

Conclusions:

• Normal dachshunds possess a breed-specific VHS range exceeding the generic canine reference.
• VHS measurement is a reliable method, showing high inter-observer agreement.
• No significant correlation was found between VHS and left atrial echocardiographic parameters.