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Radiographic Reference Intervals for Cardiac Size in Common Mynahs (Acridotheres tristis)
Amir Norouzi1, Ali Mirshahi2, Jamshid Razmyar1,3
1Department of Clinical Sciences, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Razavi Khorasan, 9177948974-1793, Iran.
Insights
Diagnosing cardiovascular disease in common mynah birds is challenging. This study establishes radiographic reference intervals for cardiac size, aiding in accurate diagnosis and improved avian healthcare.
Area of Science:
- Avian medicine
- Veterinary radiology
- Cardiology
Background:
- Cardiovascular diseases in common mynah birds are frequently undiagnosed due to physical examination limitations.
- Concurrent illnesses can further complicate accurate diagnosis of cardiac conditions in this species.
Purpose of the Study:
- To establish accurate radiographic reference intervals for cardiac size in the common mynah (Acridotheres tristis).
- To provide a quantitative tool for evaluating cardiac dimensions in this avian species.
Main Methods:
- Ventrodorsal radiographic images were acquired from 34 healthy common mynah birds.
- Cardiac width (CW) and various thoracic anatomical indices were measured.
- Linear regression analysis was used to correlate CW with radiographic indices.
Main Results:
- The mean cardiac width (CW) was 16.1 ± 0.9 mm.
- Significant moderate correlations were found between CW and thoracic width (R² = 0.37), coracoid width (R² = 0.25), and the distance between the third and fourth ribs (R² = 0.34).
- Radiographic reference intervals for cardiac size were calculated.
Conclusions:
- The established radiographic reference intervals are valuable for assessing cardiac size in common mynah birds.
- This study provides a foundation for improved diagnosis of cardiovascular conditions in this species.
- Radiographic measurements offer a non-invasive method for cardiac evaluation in avian patients.
Abstract:
Cardiovascular diseases in the common mynah (Acridotheres tristis) often go undiagnosed due to limitations with the physical examination and common concurrent illnesses. The aim of this study was to establish accurate reference intervals for cardiac size based on radiographs for this species. All birds were considered healthy based on physical examination. High-quality ventrodorsal radiographic images were obtained from 34 healthy common mynah birds. The cardiac width (CW), thoracic width, distance between third and fourth ribs, synsacral width, coracoid width, and distance between clavicular bones were evaluated on the ventrodorsal radiographic images. Additionally, the ratio between the CW and these anatomical indices were measured. In order to evaluate the correlation between CW and the radiographic indices, a linear regression model was used. The mean ± SD for CW in the 34 birds was 16.1 ± 0.9 mm (95% confidence interval: 14.1-18 mm). Significant moderate correlation was found for CW with thoracic width (R2 = 0.37; P < 0.001), coracoid width (R2 = 0.25; P = 0.002), and the distance between the third and fourth ribs (R2 = 0.34; P < 0.001). The radiographic reference intervals calculated in this study can be used to evaluate cardiac size in the common mynah bird.
