Amory H, Lekeux P
Laboratory for Functional Investigation, Faculty of Veterinary Medicine, University of Liege, Belgium.
Vet Rec. 1991 Apr 13;128(15):349-54. doi: 10.1136/vr.128.15.349.
For echocardiography to become a reliable tool for the diagnosis, monitoring and prognosis of cardiac diseases in cattle, it is necessary to determine normal values of echocardiographic variables and their changes during the growth of healthy animals. In this study, 53 echocardiographic protocols were collected from 17 healthy Friesian calves during their period of growth. The protocol consisted of the measurement or calculation of 10 dimensional and six functional variables from M-mode long axis views of the heart. The relationships between these variables and age, body-weight and body surface area were analysed. Most of the dimensional parameters increased significantly with body size and were best predicted by an allometric regression. However, the functional indices did not change with growth, and the normal values obtained in this study may be applied to calves of any body weight.
为使超声心动图成为诊断、监测和预测奶牛心脏疾病的可靠工具，有必要确定超声心动图变量的正常值及其在健康动物生长过程中的变化。在本研究中，从17头健康的弗里斯兰犊牛生长期间收集了53份超声心动图检查记录。该记录包括从心脏M型长轴视图测量或计算10个尺寸变量和6个功能变量。分析了这些变量与年龄、体重和体表面积之间的关系。大多数尺寸参数随体型显著增加，并且通过异速生长回归能得到最佳预测。然而，功能指标并不随生长而变化，本研究中获得的正常值可应用于任何体重的犊牛。
