Effect of collateral circulation on hemorrhagic transformation or short-term prognoses in patients with acute ischemia stroke after different reperfusion therapies / 中华神经医学杂志

ABSTRACT

Objective:To investigate the correlations of collateral circulation with hemorrhagic transformation (HT) and short-term prognoses in patients with acute ischemic stroke (AIS) after different reperfusion therapies.Methods:Four hundred and forty-nine patients with AIS after different reperfusion therapies, admitted to our hospital from January 2016 to December 2019, were chosen in our study. These patients were divided into HT group ( n=90) and non-HT group ( n=359) according to whether HT presented or not. The baseline data, clinical characteristics, and prognoses of patients between the 2 groups were compared. And the variables of P<0.05 in univariate analysis were re-analyzed by multivariate Logistics regression to identify the independent influencing factors for HT in patients with AIS; the correlations between cerebral collateral circulation grading (American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology [ASITN/SIR], and modified Thrombolysis in Cerebral Infarction [mTICI]) and modified Rankin scale (mRS) scores at discharge were explored. Results:(1) There were significant differences between patients in the two groups in terms of age, percentages of patients with atrial fibrillation, baseline National Institutes of Health Stroke Scale (NIHSS) scores, emergency blood glucose, platelet count, and percentages of patients used dual antiplatelet agents and statin ( P<0.05). (2) Results of multivariate Logistics analysis: moderate stroke (NIHSS scores of 9-15), severe stroke (NIHSS scores≥16), elevated emergency glucose, atherosclerotic cerebral infarction and bridging therapy were independent risk factors for HT, and good collateral circulation status and dual antiplatelet therapy were independent protective factors for HT. (3) Correlation of collateral circulation with short-term prognosis: mRS scores of patients at discharge were negatively correlated with ASITN/SIR grading of collateral circulation and mTICI grading ( rs=-0.201, P=0.003; rs=-0.222, P=0.001). Further grouping by different reperfusion therapies showed that ASITN/SIR grading in the intravenous thrombolysis group and mTICI grading in the bridging therapy group were negatively correlated with mRS scores of these patients at discharge ( rs=-0.176, P=0.016; rs=-0.271, P=0.010). Conclusion:AIS patients with poor collateral circulation who receive reperfusion therapies are more likely to develop HT than patients with good collateral circulation, enjoying a relatively poor short-term prognosis.