射血分数降低的老年心衰患者Lorenz散点图特征及与心率变异性的关联分析  

Lorenz Scatterplot Characteristics and Correlation Analysis with Heart Rate Variability in Elderly Patients with Heart Failure and Reduced Ejection Fraction

作　　者：彭卓华 王朝琳 PENG Zhuo-hua;WANG Zhao-lin(Wuhan Orthopaedics Hospital of Integrated Traditional Chinese and Western Medicine,The Affiliated Hospital of Wuhan Sports University,Wuhan Hubei 430070,China)

机构地区：[1]武汉中西医结合骨科医院/武汉体育学院附属医院,湖北武汉430070

出　　处：《湖北科技学院学报(医学版)》2025年第1期25-28,共4页Journal of Hubei University of Science and Technology(Medical Sciences)

摘　　要：目的探究射血分数降低的老年心衰(HFrEF)患者Lorenz散点图特征及与心率变异性(HRV)的关联。方法选取我院收治的100例HFrEF患者为HFrEF组,以同期100例健康体检者为对照组。比较两组Lorenz散点图特征与HRV指标差异。结果HFrEF组患者Lorenz散点图L、W、A值及L/W比值较对照组显著降低(P<0.05),HRV时域指标SDNN、SDANN、r-MSSD、PNN_(50)较对照组显著降低(P<0.05)。HFrEF组患者Lorenz散点图图形特征以鱼雷状为主(36.0%),对照组患者以棒球拍状为主(89.0%),两组患者Lorenz散点图图形特征差异有统计学意义(P<0.05)。HFrEF患者长轴L与SDNN、SDANN呈显著正相关(P<0.05),短轴W与r-MSSD、PNN_(50)呈显著正相关(P<0.05),面积A与SDNN、SDANN、r-MSSD、PNN_(50)呈显著正相关(P<0.05)。结论HFrEF患者Lorenz散点图特征及与HRV显著相关,利用相关性进行心血管疾病患者心衰程度判断和治疗,对提高HFrEF老年患者生存率有重要临床意义。Objective To investigate the Lorenz scatterplot characteristics and its association with heart rate variability(HRV)in elderly patients with heart failure with reduced ejection fraction(HFrEF).Methods 100 patients with HFrEF admitted to our hospital,they were used as the HFrEF group,and 100 healthy medical subjects who underwent physical examination during the same period were used as the control group.The Lorenz scatter plot characteristics and HRV indexes of the two groups were compared.Results The L,W,A values and L/W ratio of the Lorenz scatterplot in the HFrEF group were significantly lower than those in the control group(P<0.05),and the HRV indexes SDNN,SDANN,r-MSSD and PNN_(50)in the HFrEF group were significantly lower than those in the control group(P<0.05).The graphical features of Lorenz scatterplot in the HFrEF group were predominantly torpedo shaped(36.0%),while those in the control group were mainly baseball bat shaped(89.0%).The difference in the graphical features of Lorenz scatterplot between the two groups was statistically significant(P<0.05).In HFrEF patients,the long axis L showed a significant positive correlation with SDNN,SDANN(P<0.05),the short axis W showed a significant positive correlation with r-MSSD,PNN_(50)(P<0.05),and the area A showed a significant positive correlation with SDNN,SDANN,r-MSSD,and PNN_(50)(P<0.05).Conclusion The Lorenz scatter plot characteristics of patients with HFrEF are significantly correlated with HRV.It is of important clinical significance to use correlation to judge and treat the degree of heart failure in patients with cardiovascular diseases and improve the survival rate of elderly patients with HFrEF.

关 键 词：射血分数降低的心衰 动态心电图 LORENZ散点图 心率变异性 

分 类 号：R54[医药卫生—心血管疾病]