两例犬血管环异常的CT血管造影诊断和手术治疗效果

Computed Tomography Angiography Diagnosis and Surgery Outcome in Two Vascular Ring Anomaly Dogs

本文阐述了两例犬血管环异常(vascular ring anomaly,VRA)的CT血管造影(CT angiography,CTA)诊断及手术治疗。通过术前对患犬进行CTA诊断,进行经左侧第4肋间开胸动脉韧带切断的手术治疗,并在术后对病例1进行食道球囊扩张。CTA显示两只犬均存在持久性右主动脉弓(persistent right aortic arch,PRAA),并分别伴有右侧颈动脉异位发育和持久性左前腔静脉。手术治疗后,食道狭窄基本得到纠正,返流消失。CTA可对VRA进行更精确地诊断,并有助于制订具体手术方案;犬PRAA的手术治疗效果良好。

This research was conducted to describe computed tomographic angiography(CTA)diagnosis and surgical treatment in two vascular ring anomaly(VRA)dogs.Using CTA to confirm VRA before surgery,which was left 4th intercostal thoracotomy for ligaturing the ligamentum arteriosum.Case 1 was followed by esophageal balloon dilatation.CTA confirmed persistent right aortic arch(PRAA)in both dogs and also revealed other vascular anomalies,ectopic origin of the right carotid artery and persistent left cranial vena cava,respectively.After surgery,the esophageal stenosis was fully corrected,and regurgitation was disappeared.CTA can be used in diagnosis of VRA more accurately,which is of benefit to surgical plan.The surgical treatment for PRAA is effective in dogs.