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作 者:王枫艳 邹操[1] 董宏凯 杨易辰[1] 高美雯[3] 赵茹[3] 金建玲[3] 杨向军[1]
机构地区:[1]苏州大学附属第一医院心内科,215006 [2]运城市中心医院心内科 [3]苏州大学附属第一医院心电图室,215006
出 处:《中华心血管病杂志》2017年第9期753-757,共5页Chinese Journal of Cardiology
基 金:国家自然科学基金(30800460)
摘 要:目的 探讨扩张型心肌病(DCM)患者心率减速力(DC)变化的影响因素.方法 入选2013年1月至2016年6月在苏州大学附属第一医院心内科住院的DCM患者100例[DCM组:男66例,女34例,平均年龄(56.0±13.3)岁],另入选健康体检正常者202例作为对照[对照组:男86例,女116例,平均年龄(54.0±13.2)岁].收集入选者的一般临床资料.入选者均行超声心动图检查和24h动态心电图检查.采用多因素线性回归分析DC与年龄、性别、超声心动图参数[左心房内径(LAD)、左心室射血分数(LVEF)等]的相关性.结果 DCM组患者DC明显低于对照组[(4.40±2.03) ms比(7.30±1.81) ms,P<0.01],DC≤4.5 ms者比例明显高于对照组[62% (62/100)比6%(13/202),P<0.01].DCM组LAD≤40 mm、40 mm< LAD≤50 mm和LAD> 50 mm的患者DC逐渐降低[分别为(5.60±2.04)、(4.50 ±2.07)和(3.60±1.62)ms,P<0.05].DCM组患者DC与LAD呈负相关(r=-0.366,P<0.01),与LVEF呈正相关(r=0.241,P<0.01),与年龄、性别未见相关性;多因素线性回归分析结果显示LAD增大是DC降低的独立相关因素(B=-0.074,P<0.05).结论 DCM患者DC降低,提示迷走神经张力下降,LAD增大是其独立相关因素.Objective To investigate the determinants affecting the heart rate deceleration capacity (DC) in patients with dilated cardiomyopathy (DCM).Methods One hundred patients with DCM (DCM group) and 202 healthy subjects (control group) were respectively enrolled.Echocardiography and 24 hours electrocardiogram were performed in all subjects.DC value was compared between the two groups.Multiple regression analysis was made to evaluate the related determinants of DC ((age,sex,echocardiographic parameters including the left atrial diameter (LAD) and left ventricular ejection fraction (LVEF)).Results (1) DC value was significantly lower in DCM group than in control group((4.40 ±2.03) ms vs.(7.30 ± 1.81) ms,P < 0.01),prevalence of DC value ≤4.5 ms was significantly higher in DCM group than in control group (62% vs.6%,P < 0.01).(2) DC value in the DCM group decreased in proportion to increasing LAD dimension,DC value was (5.60 ± 2.04) ms,(4.50 ± 2.07) ms and (3.60 ± 1.62) ms (P <0.05) in DCM patients with LAD≤40 mm,40 mm< LAD≤50 mm and LAD >50 mm,respectively.(3) DC value in the DCM group was negatively related to the LAD (r =-0.366,P <0.01),positively related to the LVEF (r =0.241,P < 0.01),but not related with age and sex.Multiple factors regression analysis showed that increased LAD was related to the reduced DC values independtly.Conclusion DC value of the patients in the DCM group is decreased,which indicate the decrease of the vagus nerve tension,and increased LAD is related to the reduced DC value independtly in DCM patients.
分 类 号:R542.2[医药卫生—心血管疾病]
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