INTRODUCTION The purpose of this study was to analyze the difference in clinical and aortic morphological features between the bovine aortic arch and normal aortic arch in patients with acute type B aortic dissection (aTBAD). METHODS A total of 133 patients diagnosed with aTBAD were retrospectively collected. Based on aortic arch morphology, they were divided into the bovine aortic arch group (n = 20) and the normal aortic arch group (n = 113). Aortic morphological features were assessed on computed tomographic angiography. Clinical and aortic morphological features were then compared between the bovine aortic arch and normal aortic arch groups. RESULTS Patients in the bovine aortic arch group were significantly younger and with higher weight and BMI than the normal aortic arch group (p < 0.001, p = 0.045, and p = 0.016, respectively). The total aortic length in the bovine aortic arch group was significantly shorter than that in the normal aortic arch group (p = 0.039). The tortuosity of descending thoracic aorta, the tortuosity of descending aorta, and the angulation of aortic arch were significantly lower in the bovine aortic arch group (p = 0.004, p = 0.015, and p = 0.023, respectively). The width of descending aorta, the height of aorta arch, and the angle of ascending aorta were significantly smaller in the bovine aortic arch group (p = 0.045, p = 0.044, and p = 0.042, respectively). CONCLUSION When the aTBAD occurred, patients with bovine aortic arch were prone to be younger and with higher BMI than those with normal aortic arch. The aortic curvature and the total aortic length were lower in patients with bovine aortic arch.

中文翻译：

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急性B型主动脉夹层牛主动脉弓与正常主动脉弓临床及主动脉形态特征的比较研究。

引言本研究的目的是分析急性B型主动脉夹层（aTBAD）患者牛主动脉弓与正常主动脉弓的临床和主动脉形态特征的差异。方法回顾性收集133例诊断为aTBAD的患者。根据主动脉弓形态分为牛主动脉弓组（n = 20）和正常主动脉弓组（n = 113）。通过计算机断层扫描血管造影评估主动脉形态特征。然后比较牛主动脉弓组和正常主动脉弓组之间的临床和主动脉形态特征。结果 与正常主动脉弓组相比，牛主动脉弓组患者明显更年轻，体重和体重指数更高（分别为 p < 0.001、p = 0.045 和 p = 0.016）。牛主动脉弓组的主动脉总长度显着短于正常主动脉弓组（p = 0.039）。牛主动脉弓组的胸降主动脉迂曲度、降主动脉迂曲度和主动脉弓角度显着较低（分别为 p = 0.004、p = 0.015 和 p = 0.023）。牛主动脉弓组的降主动脉宽度、主动脉弓高度和升主动脉角度显着较小（分别为 p = 0.045、p = 0.044 和 p = 0.042）。结论 aTBAD发生时，牛主动脉弓患者较正常主动脉弓患者更容易出现年龄较小、BMI较高的情况。牛主动脉弓患者的主动脉曲率和主动脉总长度较低。