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Estimation of vertebral heart size and cardiothoracic ratio in Persian cats
1Institute of Graduate Studies, Istanbul University-Cerrahpaşa, Istanbul, Turkey.
Insights
This study established reference values for vertebral heart size (VHS) and cardiothoracic ratio (CTR) in Persian cats. Brachycephalic breed characteristics influence these cardiac measurements, crucial for diagnosing thoracic diseases.
Area of Science:
- Veterinary Radiology
- Comparative Cardiology
- Feline Medicine
Background:
- Vertebral heart size (VHS) and cardiothoracic ratio (CTR) are vital metrics for assessing feline cardiac health.
- Brachycephalic cat breeds may exhibit unique thoracic and cardiac morphometrics.
- Establishing breed-specific reference values is crucial for accurate diagnosis.
Purpose of the Study:
- To determine reference values for VHS and CTR in Persian cats.
- To evaluate the influence of radiographic positioning (lying) and sex on these measurements.
- To correlate VHS and CTR findings with the brachycephalic characteristics of Persian cats.
Main Methods:
- Morphometric analysis of thoracic and cardiac structures from radiographic images of Persian cats.
- Calculation of VHS and CTR values.
- Statistical analysis to assess the impact of position and sex.
Main Results:
- Radiographic position (lying) did not significantly affect VHS and CTR values.
- Sex was not a significant factor influencing VHS and CTR.
- Persian cats exhibited an average VHS of 8.16 thoracic vertebrae, higher than values reported for other cat breeds.
Conclusions:
- The study provides reference VHS and CTR values specific to Persian cats.
- The elevated VHS in Persian cats is likely attributable to their brachycephalic conformation.
- These breed-specific values aid in the accurate radiographic evaluation of cardiac health in brachycephalic cats.
Abstract:
The study aimed to determine the reference values related to vertebral heart size (VHS) and cardiothoracic ratio (CTR), which are effective in the evaluation of the thorax diseases and especially cardiomegaly of the brachycephalic cats using the morphometric data of thorax and heart obtained from the radiographic images of the thoracic region of the Persian cats. It was determined that lying position during radiography did not affect VHS and CTR values. Also, the sex factor did not have a significance on these values. The fact that the VHS value of 8.16 thoracic vertebrae averagely found in the Persian cats is higher than 7.5 thoracic vertebrae value averagely stated in the studies conducted with the cats of different breeds is considered since the breed is brachycephalic.
