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Article Abstract
Background: Stanford type A acute aortic dissection (TAAAD) is often accompanied by preoperative disorders of coagulation. The study aimed to evaluate the relationship between computed tomography angiography imaging features and preoperative coagulopathy in TAAAD patients.
Methods: This was a single-center retrospective review of adult patients undergoing TAAAD surgery from January 2015 to January 2019 in the Beijing Anzhen Hospital (Beijing, China). Images were obtained using preoperative enhanced computed tomography in 174 patients with TAAAD. Preoperative coagulopathy was defined as the disseminated intravascular coagulation score greater than 5. The patients were divided into coagulopathy and non-coagulopathy groups. Circumferential arc lengths of the false lumen (Fx) and true lumen (Tx) were measured at four planes (ascending aorta, thoracic-descending aorta, descending aorta and abdominal aorta). We define the value of Fx/(Tx+Fx) × 100% as tear index (TI) and take the four planes' averages to weighed the false lumen's size. By analyzing the two groups of clinical data and computed tomography angiography imaging data, potentially related factors were detected by univariate analysis and multivariate binary logistic regression analysis.
Results: The incidence of preoperative coagulopathy for TAAAD patients was 12.07%. In adjusted multivariate binary logistic regression analysis, white blood cell count (odds ratio [OR]: 1.204, 95% confidence interval [CI]: 1.035-1.400, P = 0.016); longitude length of aortic dissection (OR: 1.076, 95% CI: 1.016-1.139, P = 0.012); and Tear index (OR = 1.177, 95% CI: 1.075-1.289, P < 0.001) were significant factors related to the occurrence of preoperative coagulopathy for TAAAD.
Conclusions: The incidence of preoperative coagulopathy in TAAAD patients was 12.07%. The longitude length of AD, TI and white blood cell count were significant factors related to preoperative coagulopathy in patients with TAAAD. The significance of imaging and anatomic changes related to coagulopathy are worth further study in TAAAD patients.
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