Prognostic value of different imaging scores based on cta in endovascular treatment of acute basilar artery occlusion

Abstract

Objective: To investigate the prognostic factors of intravascular therapy for acute basilar artery occlusion (aABO), and to evaluate the prognostic value of various imaging scores based on CTA. Study Design: Observational study. Place and Duration of Study: Department of Radiology, The Second Affiliated Hospital of Anhui Medical University, China, from January 2018 to January 2022. Methodology: Clinical data of 120 patients who underwent intravascular therapy for aABO were analysed retrospectively. The patients were divided into the poor prognosis group (n=54) and the good prognosis group (n=66) according to the score of the modified rankin scale (mRS) 90 days after the intervention. General clinical parameters of patients and the results of three imaging scores based on CTA i.e. basilar artery CT angiography (BATMAN) score, posterior circulation collateral circulation score (pc-CS), and posterior circulation CT angiography (pc-CTA) score, were taken as independent variables. Prognosis was taken as dependent variable. Univariate and unconditional binary logistic regression analyses were carried out respectively. Results: Multivariate logistic regression analysis showed that preoperative National Institutes of Health Stroke Scale (NIHSS) score (OR=1.063, 95%CI: 1.0141.114, p=0.011), pc-CTA score (OR=17.183, 95%CI: I3.51584.010, p 0.001), BATMAN score (OR=0.393, 95%CI: 0.2290.675, p=0.001), and pc-CS score (OR=0.374, 95%CI: 0.2060.682, p=0.001) were independent factors affecting the short-Term prognosis of patients with aABO. ROC curve analysis showed that the area under the curve (AUC) of the Batman score, pc-CS score and pc-CTA score were 0.900, 0.864 and 0.842 respectively, and the cut-off values were 4.5, 4.5 and 1.5 respectively. Conclusion: Preoperative high NIHSS score and high pc-CTA score were independent risk factors for poor prognosis of patients with aABO after intravascular therapy, while high BATMAN score and high pc-CS score were protective factors for prognosis.