Clinical efficacy of atorvastatin calcium combined with aspirin in patients with acute ischemic stroke and effect on neutrophils, lymphocytes and IL-33

Clinical efficacy of atorvastatin calcium combined with aspirin in patients with acute ischemic stroke (AIS) and its effect on neutrophils to lymphocytes ratio (NLR) and interleukin-33 (IL-33) were investigated. In total, 108 patients with AIS in Luoyang Central Hospital Affiliated to Zhengzhou University from April 2016 to October 2017 were selected. There were 56 cases treated with atorvastatin calcium combined with aspirin as the observation group, and 52 cases were treated with aspirin alone as the control group. The clinical effect was observed. The NLR and IL-33 levels were measured by routine blood test and enzyme linked immunosorbent assay (ELISA) before and after treatment. The scores of the National Institutes of Health Stroke scale (NIHSS) and the occurrence of complications were collected before and after treatment in the two groups. Modified Rankin Scale (MRS) was used to evaluate the curative effect. Score ≤2 points is effective in the treatment. Pearson's analysis was used to analyze the correlation between NLR, IL-33 and NIHSS score. The total hospitalization time and 1 year survival rate were compared. The total effective rate of treatment in the observation group was higher than that in the control group (P<0.05). There was no difference in NLR and IL-33 levels between the two groups before treatment (P>0.05). After treatment, the NLR in the observation group was significantly lower than that in the control group (P<0.05). After treatment, the NIHSS score, the total number of complications and the total hospitalization time in the observation group were significantly lower than those in the control group (P<0.05). Pearson's analysis showed a positive correlation between NLR and NIHSS score (r=0.681, P<0.001), and a negative correlation between IL-33 and NIHSS score (r=-0.708, P<0.001). In conclusion, atorvastatin calcium combined with aspirin has a better effective rate in the treatment of acute ischemic stroke than aspirin alone. The combination can better reduce the NLR, increase the expression level of IL-33 in serum, reduce the occurrence of complications and hospitalization time, and increase the survival rate of patients.