不同胎龄新生儿心电图P-R间期、QRS时限以及QTLc的特点  

Features of ECG P-R interval,QRS time and QTLc in newborns with different gestational age

作　　者：程红[1] 

机构地区：[1]湖北省天门市第一人民医院,湖北天门431700

出　　处：《东南大学学报（医学版）》2015年第5期788-791,共4页Journal of Southeast University(Medical Science Edition)

摘　　要：目的：探讨不同胎龄新生儿心电图中P-R间期、QRS时限及QTLc特点。方法：将152例不同胎龄新生儿根据胎龄不同分为4组：28～30周为A组，31～33周为B组，34～36周为C组，37～40周为D组；对所有新生儿分别测量心电图P-R间期、QRS时限、QTLc、QRS振幅、RV1振幅、TV1和TV5振幅。结果：P-R间期随胎龄的增加而延长，组间比较差异有统计学意义（F＝11.362，P＝0.0009）。但QRS时限和QTLc无明显延长，组间比较差异无统计学意义（P＞0.05）；QRS和RV1振幅均随胎龄的增加而升高，两两比较差异有统计学意义（F＝6.763、F＝18.096，P＝0.0087、P＝0.0014）；TV1和TV5振幅均随胎龄的增加而升高，两两比较差异有统计学意义（F＝34.981、F＝20.783，P＝0.0012、P＝0.0065）。结论：不同胎龄新生儿心电图P-R间期与胎龄相关，QRS时限及QTLc与胎龄无明显相关。Objective：To study the features of ECG P-R interval, QRS time and QTLc in newborns with different gestational age.Methods：152 newborns with different gestational ages in neonatal of our hospital from 2014 to 2015 were subjects of our study.They were divided into four groups, Group A consists of newborns of age 28-30 weeks,group B 31 -33 weeks, group C 34 -36 weeks, group D 37 -40 weeks.All newborns had their P-R intervals,QRS time, QTLc, QRS amplitudes, RV1 amplitudes, TV1 and TV5 amplitudes measured.Results： P-R interval prolongs with increasing gestational age, and the difference was significant between two groups （ F =11.362,P=0.000 9）.QRS duration and QTLc were not significantly longer, and the difference between the two groups was insignificant （ P〉0.05 ）;QRS and RV1 amplitude rises with increasing gestational age, and pairwise comparisons were with significantly difference（F=6.763,F=18.096;P=0.008 7,P=0.001 4）;Both TV1 and TV5 amplitudes increase with increasing gestational age; pairwise comparisons yields significant difference （ F =34.981, F=20.783;P=0.001 2,P=0.006 5）.Conclusion： P-R interval is correlated with gestational age of neonates, QRS time and QTLc are not significantly related to gestational age.

关 键 词：胎龄 新生儿 心电图 P-R间期 QRS时限 QTLC 

分 类 号：R540.41[医药卫生—心血管疾病]