  Effect of breed, sex, age and body weight on Echocardiographic Measurements in the Equine Species; Farnir, Frédéric  ; Deleuze, Stefan et alin Research in Veterinary Science (2013), In press Little is known about the effect of various animal's signalment variables on echocardiographic reference values in the equine species. This study was performed to evaluate the effect of sex, breed, age ... [more ▼] Little is known about the effect of various animal's signalment variables on echocardiographic reference values in the equine species. This study was performed to evaluate the effect of sex, breed, age and body weight (BW) on echocardiographic measurements in the equine species. Echocardiography was performed on 212 ponies or horses of various breeds, aged from 1 day to 37 years old (mean ± SD: 7.8 ± 5.8 years), BW 38-890 kg (mean ± SD: 421 ± 133 Kg), and free of cardiac disease. Fifty of those animals aged from 2 months to 35 years old (mean ± SD: 11.6 ± 6.4 years old); BW 77-662 kg (mean ± SD: 436 ± 135 kg) were also examined using the pulsed-wave Doppler mode. Standard two-dimensional and M-mode echocardiography were performed on all animals. Standard pulsed-wave Doppler examination of each cardiac valve was performed on the 50 first examined animals. Data were analysed using a general linear model including the effect of sex, age, breed and BW after logarithmic transformation of the data. Therefore, the same analysis was performed separately on animals aged 2 years-old and on older animals. All dimensional echocardiographic measurements were significantly affected by BW and most of them were significantly affected by breed, but not by sex. Only the aortic and the pulmonary artery internal diameter were significantly affected by age. None of the Doppler measurements were significantly affected by the tested variables. In conclusion, in the equine species, dimensional echocardiographic reference values should be established using regression equations as a function of BW, which could increase the diagnostic value of this leading technique in equine cardiology. Breed could also have an effect on those measurements. [less ▲] Detailed reference viewed: 72 (42 ULg)Relationship between echocardiographic measurements and body size in horses.; Leroux, Aurélia ; Borde, Laura et alin Journal of Equine Veterinary Science (2012) The objectives of this work were to evaluate the optimal body size variable, and to determine mathematical model that best fits echocardiographic measurements to body size in the equine species. 150 ... [more ▼] The objectives of this work were to evaluate the optimal body size variable, and to determine mathematical model that best fits echocardiographic measurements to body size in the equine species. 150 horses of various breeds, aged 1 week to 17 years old, body weight (BW) 38 to 890 kg, and free from cardiac disease were used in this study. Based on their age (i.e. younger or older than 2 years), animals were separated into 2 groups. In each horse, the body weight (BW), height at withers (HT), thoracic circumference (TC) and the body length (BL) were measured, the body surface area (BSA) was calculated, and a standard two-dimensional and M-mode echocardiography was performed allowing classic cardiac measurements to be taken. Correlations between each echocardiographic measurement and each of the anthropometric variables were assessed via a Pearson’s product-moment analysis and using linear, logarithmic, and power regression analysis in all animals and within the 2 groups. The dimensional, but not the functional, echocardiographic measurements showed a close correlation with all body size variables, especially during growth. The relationship between cardiac measurements and body size was best described using power regression models with TC as the anthropometric variable, but the relationship was also very accurately described using BW, BSA, or BL. In the equine species, dimensional echocardiographic reference values should be established using power regression equations on TC. Such a correction for body size could increase the diagnostic value of echocardiography in equine cardiology. [less ▲] Detailed reference viewed: 55 (20 ULg) assessment of acid base imbalances in horses suffering from atypical myopathyVan Galen, Gaby ; Cerri, Simona ; et alin proceedings AAEP 2011 (2011, November 11) Detailed reference viewed: 33 (10 ULg)Exploratory survey on acid base derangements in horses suffering from atypical myopathyVan Galen, Gaby ; Cerri, Simona ; et alin Proceedings BEVA 2011 (2011, September 08) Detailed reference viewed: 11 (3 ULg) |
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