Effect of blood pressure variability on early neurological deterioration in patients with acute minor stroke or high-risk transient ischemic attack / 国际脑血管病杂志

ABSTRACT

Objective To investigate the effect of blood pressure variability on early neurological deterioration (END) in patients with acute minor stroke or high-risk transient ischemic attack (TIA).Methods Consecutive patients with acute minor stroke or high-risk TIA admitted to the Department of Neurology, the Affiliated Hospital of Yangzhou University between March 2017 and December 2018 were enrolled prospectively. Minor stroke was defined as the National Institutes of Health Stroke Scale (NIHSS)score ≤3, and high-risk TIA was defined as ABCD2 score ≥4. The blood pressure monitored within 72 h after admission was analyzed. The mean, maximum (max), range (max-min), standard deviation (SD), and coefficient of variation (CV) of systolic blood pressure (SBP) and diastolic blood pressure (DBP) were calculated. END was defined as highest NIHSS score increase ≥ 2 at re-evaluation within 72 h after admission compared with the baseline score. Multivariate logistic regression analysis was used to determine the independent correlation between blood pressure variability parameters and END. Results A total of 123 patients were enrolled in the study, including 54 females (43. 90％) and 69 males (56. 10％), aged (63. 74 ± 11. 94) years. Thirty-nine (31. 71％) of them were high-risk TIA, 84 (68. 29％) were minor strokes. END occurred in 33 patients (26. 8％) within 72 h on admission. Univariate analysis showed that there were significant differences in age, gender, white blood cell count, C-reactive protein, and SBPmax-min , SBPSD ,SBPCV, DBPmax-min , DBPSD , and DBPCV between the END group and the non-END group (all P < 0. 05).Multivariate logistic regression analysis showed that after adjusting for confounding factors, SBPmax-min (odds ratio [OR] 1. 019, 95％ confidence interval [CI] 1. 001-1. 038), SBPSD (OR 1. 099, 95％ CI 1. 005-1. 201),SBPCV(OR 1. 320, 95％ CI 1. 124-1. 550), DBPmax-min (OR 1. 065, 95％ CI 1. 017-1. 114), DBPSD (OR 1. 492,95％ CI 1. 186-1. 877), and DBPCV(OR 1. 543, 95％ CI 1. 263-1. 886) were the independent risk factors for END within 72 h on admission in patients with acute minor stroke or high-risk TIA. Conclusion Multiple blood pressure variability parameters are significantly independently correlated with the risk of END in patients with acute minor stroke or high-risk TIA.