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Laboratory factors associated with symptomatic hemorrhagic conversion of acute stroke after systemic thrombolysis
Journal of the Neurological Sciences ( IF 3.6 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.jns.2020.117265
Haris Kamal , Bijal K. Mehta , Muhammad K. Ahmed , Katelyn S. Kavak , Alicia Zha , Navdeep S. Lail , Peyman Shirani , Fawaz Al-Mufti , Robert N. Sawyer , Ashkan Mowla

BACKGROUND Laboratory factors associated with hemorrhagic conversion (HC) after Intravenous thrombolysis with rtPA (IVT) for Acute Ischemic Stroke (AIS) remain nebulous despite advances in our knowledge of AIS. This study aimed to investigate the laboratory factors predisposing to HC in AIS patients receiving IVT. METHODS We retrospectively reviewed the medical records of patients who received IV tPA for AIS at our comprehensive stroke center over a 9.6-year period. Besides age, gender, NIHSS, history of diabetes mellitus (DM), history of atrial fibrillation (Afib), we gathered their laboratory data including International Normalized Ratio (INR), lipid panel, serum albumin, serum creatinine, hemoglobin A1c (HbA1c), and admission blood glucose. Post-thrombolysis brain imagings were reviewed to evaluate for symptomatic ICH (sICH). The mean values of above mentioned laboratory data were compared between the group with sICH and patients with no sICH. Univariate and multivariate logistic regression were performed to evaluate the association of the laboratory findings with presence of sICH. sICH was defined as ICH causing an increase in NIHSS ≥4. RESULTS Of the 794 subjects in this study 51 (6.4%) had sICH. In the univariate analysis, patients who developed sICH had significantly higher NIHSS on admission (14.2 ± 5.4 vs 11.2 ± 6.5, p < .001), LDL-cholesterol (113.3 mg/dl ±36.9 vs. 101.8 mg/dl ± 38.2, p = .032), HbA1c (6.9% ± 2.3 vs. 6.1 ± 1.3, p = .003) and lower levels of Albumin (3.5 g/dl ±0.4 vs. 3.9 g/dl ± 0.5, p < .001). Furthermore, a higher prevalence of history of DM (45% vs. 21.6%, p = .020) and Afib (25.4% vs. 10.4%, p = .028) was found in subjects who developed sICH. There were no significant group differences regarding age, sex, total cholesterol, blood glucose on admission, serum creatinine or INR levels (p > .05). After adjusting for multiple covariates, lower Albumin level and and higher HbA1c were significantly associated with an increased risk for sICH development (p < .05). Chances of sICH increased by 33% for every 1 g/dl below a normal albumin level of 4.0 g/dl (p < .05). CONCLUSION Lower endogenous albumin level and higher HbA1c have shown to predispose to a higher risk of sICH after IVT for AIS and might be good predictors of sICH post IVT.

中文翻译:

急性脑卒中全身溶栓后症状性出血转化的相关实验室因素

背景 尽管我们对 AIS 的了解有所进步,但与 rtPA (IVT) 静脉溶栓治疗急性缺血性中风 (AIS) 后出血转化 (HC) 相关的实验室因素仍然模糊不清。本研究旨在调查接受 IVT 的 AIS 患者易患 HC 的实验室因素。方法 我们回顾性地审查了 9.6 年间在我们的综合卒中中心接受静脉 tPA 治疗 AIS 的患者的医疗记录。除了年龄、性别、NIHSS、糖尿病 (DM) 病史、房颤 (Afib) 病史,我们还收集了他们的实验室数据,包括国际标准化比率 (INR)、血脂面板、血清白蛋白、血清肌酐、血红蛋白 A1c (HbA1c) ,以及入院血糖。对溶栓后脑成像进行审查以评估有症状的 ICH (sICH)。比较sICH组和非sICH组上述实验室数据的平均值。进行单变量和多变量逻辑回归以评估实验室发现与 sICH 存在的关联。sICH 被定义为 ICH 导致 NIHSS 增加≥4。结果 本研究的 794 名受试者中有 51 名 (6.4%) 患有 sICH。在单变量分析中,发生 sICH 的患者入院时 NIHSS(14.2 ± 5.4 vs 11.2 ± 6.5,p < .001)、LDL-胆固醇(113.3 mg/dl ±36.9 vs. 101.8 mg/dl ± 38.2,p)显着升高= .032)、HbA1c(6.9% ± 2.3 与 6.1 ± 1.3,p = .003)和较低水平的白蛋白(3.5 g/dl ±0.4 与 3.9 g/dl ± 0.5,p < .001)。此外,糖尿病史(45% 对 21.6%,p = .020)和房颤(25.4% 对 10.4%,p = .020)的患病率更高。028) 发现于发生 sICH 的受试者中。年龄、性别、总胆固醇、入院时血糖、血清肌酐或 INR 水平没有显着的组间差异(p > .05)。在调整多个协变量后,较低的白蛋白水平和较高的 HbA1c 与 sICH 发展的风险增加显着相关(p < .05)。比正常白蛋白水平 4.0 g/dl 低 1 g/dl,sICH 的几率增加 33% (p < .05)。结论 较低的内源性白蛋白水平和较高的 HbA1c 已表明 IVT 后 AIS 易患 sICH 的风险较高,并且可能是 IVT 后 sICH 的良好预测因子。较低的白蛋白水平和较高的 HbA1c 与 sICH 发展的风险增加显着相关(p < .05)。比正常白蛋白水平 4.0 g/dl 低 1 g/dl,sICH 的几率增加 33% (p < .05)。结论 较低的内源性白蛋白水平和较高的 HbA1c 已表明 IVT 后 AIS 易患 sICH 的风险较高,并且可能是 IVT 后 sICH 的良好预测因子。较低的白蛋白水平和较高的 HbA1c 与 sICH 发展的风险增加显着相关(p < .05)。比正常白蛋白水平 4.0 g/dl 低 1 g/dl,sICH 的几率增加 33% (p < .05)。结论 较低的内源性白蛋白水平和较高的 HbA1c 已表明 AIS 的 IVT 后发生 sICH 的风险较高,并且可能是 IVT 后 sICH 的良好预测因子。
更新日期:2021-01-01
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