Hassan Elham A, Hassan Marwa H, Torad Faisal A
Department of Surgery, Anesthesiology and Radiology, Faculty of Veterinary Medicine, Cairo University, Giza Square P.O. 12211, Giza, Egypt.
J Vet Med Sci. 2018 May 18;80(5):766-771. doi: 10.1292/jvms.17-0518. Epub 2018 Mar 29.
The aim of the study was to correlate the clinical severity of pectus excavatum with its type and degree based on objective radiographic evaluation. Twelve brachycephalic dogs were included. Grading of the clinical severity was done based on a 6-point grading score. Thoracic radiographs were used to calculate the frontosagittal and vertebral indices at the tenth thoracic vertebra and the vertebra overlying the excavatum. Correlation between the clinical severity score and frontosagittal and vertebral indices was evaluated using Pearson's correlation coefficient. Typical pectus excavatum was recorded in the caudal sternum in seven dogs, with a mean clinical severity score of 1.7 ± 1.4, whereas in five dogs, atypical mid-sternal deviation was recorded with a mean clinical severity score of 3.8 ± 0.7. A strong correlation (r=0.7) was recorded between the clinical severity score and vertebral index in the atypical form, whereas a weak correlation (r=0.02) was recorded in the typical form (P<0.05). The clinical severity and degree of pectus excavatum was poorly correlated (r=0.3) in the typical form of pectus excavatum, whereas it was strongly correlated (r=0.9) in the atypical form. Pectus excavatum in dogs is associated with compressive cardiopulmonary dysfunction, which depends mainly on the site/type of deviation rather than the degree of deviation.
本研究的目的是基于客观的影像学评估，将漏斗胸的临床严重程度与其类型和程度相关联。纳入了12只短头犬。临床严重程度根据6分制评分进行分级。使用胸部X光片计算第10胸椎和漏斗胸上方椎体的额矢状指数和椎体指数。使用Pearson相关系数评估临床严重程度评分与额矢状指数和椎体指数之间的相关性。7只犬在尾侧胸骨记录到典型漏斗胸，平均临床严重程度评分为1.7±1.4，而5只犬记录到非典型胸骨中段偏移，平均临床严重程度评分为3.8±0.7。在非典型形式中，临床严重程度评分与椎体指数之间记录到强相关性（r=0.7），而在典型形式中记录到弱相关性（r=0.02）（P<0.05）。在典型漏斗胸形式中，临床严重程度与漏斗胸程度的相关性较差（r=0.3），而在非典型形式中则呈强相关性（r=0.9）。犬的漏斗胸与压迫性心肺功能障碍有关，这主要取决于偏移的部位/类型而非偏移程度。
