摘要
目的了解妊娠对心电图的影响。方法记录51例研究对象(平均29.5±4.6岁)孕前期、孕中期、孕晚期的12导联同步心电图,测量每份心电图的心率、心电轴、P波时限、PR间期、QRS时限、QT间期、Ⅱ和V_(1)导联的P波振幅、各个导联Q波、R波、S波、T波振幅,比较各项指标在孕前期、孕中期、孕晚期的变化。结果十二导联心电图的心率、心电轴、P波时限、PR间期,QRS时限,QT间期等时间相关的数据在孕前、孕中、孕晚期没有显著差异(P>0.05)。Ⅰ导联R波振幅在孕晚期大于孕前和孕中期(均P<0.01),aVL导联R波振幅孕晚期均大于孕前(P<0.01)。V_(1)导联S波振幅在孕晚期小于孕前(P<0.05),V_(2)导联S波振幅在孕中期小于孕前(P<0.05)。V_(1)导联R/S在孕晚期大于孕前期和孕中期(P<0.05),V_(2)导联R/S在孕晚期大于孕前(P<0.05)。Ⅰ、aVR、aVL导联T波振幅在孕晚期大于孕前(P<0.01)和孕中期(P<0.05),Ⅲ和V_(1)导联T波振幅孕晚期大于孕前(P<0.05)。V_(2)导联T波振幅孕中期和孕晚期小于孕前(P<0.05)。结论妊娠对心电图的影响主要表现为孕晚期Ⅰ、aVL导联R波振幅、T波振幅以及V_(1)、V_(2)~V_(6)导联R/S增大,为妊娠晚期子宫压迫心脏使其呈横位以及心脏负荷增加所致。
Objective To understand the effect of pregnancy on the ECG.Methods Twelve-lead synchronized ECG of 51 study subjects(29.5±4.6)years old in the first trimester,second trimester and third trimester were recorded.The heart rate,ECG axis,P-wave time,PR interval,QRS duration,QT interval,and QT interval were measured on each ECG.The P amplitude of leadⅡand V_(1)and Q wave,R wave,S wave,T wave amplitude on each lead were measured.Analyze the changes of these indicators in the first trimester,second trimester and third trimester.Results On 12-lead ECG,heart rate,ECG axis,P-wave time,PR interval,QRS duration,QT interval,etc.Data did not differ significantly in the first trimester,second trimester,and third trimester(P>0.05).R wave amplitude on leadⅠin the third trimester was greater than that in the first and second trimesters(both P<0.01),and R wave amplitude on lead aVL in the third trimester was greater than that in the first trimester(P<0.01).The S wave amplitude on lead V_(1)in the third trimester was smaller than that in the first trimester(P<0.05),and the S wave amplitude on lead V_(2)in the second trimester is smaller than that before pregnancy(P<0.05).The RS ratio on lead V_(1)in the third trimester was greater than that in the first and second trimesters(P<0.05),and the RS ratio on lead V_(2)in the third trimester was greater than that in the first trimester(P<0.05).On leadⅠ,aVR,aVL,T wave amplitude in the third trimester of pregnancy was greater than that in the first trimester(P<0.01)and the second trimester(P<0.05).The T amplitudes of leadⅢand V_(1)in the third trimester pregnancy was greater than that before pregnancy(P<0.05).T wave amplitude on lead V_(2)in the second and third trimesters of pregnancy is smaller than that before pregnancy(P<0.05).Conclusions The effect of pregnancy on ECG is mainly manifested as the increase in the R wave and T wave amplitude on leadⅠand aVL,and the RS ratio on the lead V_(1)and V_(2)in the third trimester.It is caused by the uterine compression of the heart in the later trimester of pregnancy to make it transverse,and the increase in cardiac load.
作者
冯应君
王婷
叶培机
聂文娟
谭景
Feng yingjun;Wang ting;Ye peiji;Nie wenjuan;Tan jing(Yuebei people's Hospital,Shaoguan,512026,China)
出处
《临床心电学杂志》
2023年第1期36-39,43,共5页
Journal of Clinical Electrocardiology
基金
韶关市卫健局课题(项目编号:Y21078)
关键词
心电图
妊娠
孕周
Electrocardiogram
Pregnancy
Gestational age
