Relationship of HRV parameters with cognitive impairment in elderly patients with ischemic cerebral small vessel disease
10.3969/j.issn.1009-0126.2025.06.017
- VernacularTitle:老年缺血性脑小血管病患者心率变异性参数与认知功能障碍的关系
- Author:
Yanrong YANG
1
;
Zhiyu LÜ
;
Zheng LI
Author Information
1. 646000 泸州,西南医科大学附属医院神经内科
- Publication Type:Journal Article
- Keywords:
aged;
cognition disorders;
heart rate;
correlation of data
- From:
Chinese Journal of Geriatric Heart Brain and Vessel Diseases
2025;27(6):770-773
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the relationship between heart rate variability(HRV)parameters and cognitive impairment in elderly patients with ischemic cerebral small vessel disease(CSVD).Methods A total of 120 elderly patients with ischemic CSVD admitted in Affiliated Hospital of Southwest Medical University from December 2020 to December 2022 were recruited,and accord-ing to Montreal cognitive assessment(MoCA)score,they were divided into cognitively impaired group(MoCA score＜26,n=38)and cognitively normal group(MoCA score≥26,n=82).All pa-tients received dynamic electrocardiography to obtain HRV parameters,including standard devia-tion of R-R interval(SDNN),percentage of the number of pairs of adjacent R-R intervals differing by more than 50 ms(PNN50),power in low frequency range(LF)and power in high frequency range(HF).The relationship between HRV parameters and cognitive impairment was analyzed by Spearman correlation analysis,and the value of HRV parameters in evaluating cognitive impair-ment was explored by ROC curve analysis.Results The cognitively impaired group had signifi-cantly lower SDNN,PNN50,LF and HF than the cognitively normal group(P＜0.05,P＜0.01).Spearman correlation analysis indicated that SDNN,PNN50,LF and HF were negatively correla-ted with cognitive impairment in elderly patients with ischemic CSVD(r=-0.185,r=-0.720,r=-0.278,r=-0.387;P＜0.05).ROC curve analysis manifested that the AUC value,sensitivi-ty and specificity of combination of SDNN,PNN50,LF and HF in evaluating cognitive impair-ment in the patients was 0.972(95％CI:0.949-0.996),94.70％and 89.00％,respectively.The efficiency of combined evaluation was better than that of each indicator alone(P＜0.01).Conclusion The HRV parameters are closely associated with cognitive impairment in elderly pa-tients with ischemic CSVD.Early determination of SDNN,PNN50,LF,HF and other HRV pa-rameters can provide reference for the evaluation of cognitive impairment.
