Abstract

Objective To investigate the correlation between early blood pressure variability and early neurological deterioration (END) in patients with acute ischemic stroke. Methods Inpatients with acute ischemic stroke were collected prospectively. The blood pressure values of the enrolled patients were recorded continuously for 72 h after admission. The mean value (mean), maximum value (max), differences between the maximum and minimum (max-min), standard deviation (SD), and coefficient of variation (CV) for the systolic blood pressure (SBP) and diastolic blood pressure (DBP) were calculated. END was as an increase of at least 2 in the highest score of the National Institute of Health Stroke Scale (NIHSS) compared to the baseline. Multivariate logistic regression analysis was used to identify the independent correlation between the different blood pressure variability parameters and END following acute ischemic stroke after adjusting the confounding factors. Results A total of 128 patients with acute ischemic stroke were enrolled, including 53 females and 75 males, and their mean age was 63.30±11.82 years. After standard treatment, 35 patients (27.34%) developed END within 72 h after admission. There were significant differences in age, sex, diabetes mellitus, baseline NIHSS, C-reactive protein and SBPmax, SBPmax-min, SBPSD, SBPCV, DBPmax, DBPmax-min, DBPSD, and DBPCV between END group and non-END group (all P<0.05). Multivariate logistic regression analysis showed that SBPmax-min (odds ratio [OR] 1.040, 95% confidence interval [CI] 1.014-1.067, SBPSD (OR 1.191, 95% CI 1.052-1.347), SBPCV (OR 1.317, 95% CI 1.100-1.578), DBPmax-min (OR 1.076, 95% CI 1.018-1.138), DBPSD (OR 1.508, 95% CI 1.128-2.016), and DBPCV (OR 1.338, 95% CI 1.093-1.638) in blood pressure variability indices were the independent risk factors for END in patients with acute ischemic stroke. Conclusion Blood pressure variability is significantly associated with END within 72 h after admission in patients with acute ischemic stroke. Key words: Stroke; Brain Ischemia; Blood Pressure; Hypertension; Prognosis; Risk Factors; Time Factors

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