不同孕周正常胎儿心脏大小的超声评价

Ultrasonic evaluation of normal fetal heart size in gestational weeks

目的:探讨不同孕周正常胎儿心脏大小的超声特征,分析其与孕周的相关性。方法:将2017年4月—2019年10月我院孕20~36^(+6)周正常孕妇及其胎儿280例按不同孕周段分为A、B、C、D组,测量左心房(LA)、左心室(LV)、右心房(RA)、右心室(RV)、主动脉(AO)、肺动脉(PA)、卵圆孔(FO)、动脉导管(DA),计算RA/LA、RV/LV、PA/AO、FO/AO比值;分析4组参数正常值范围及与孕周的相关性。结果:各腔室大小、AO、PA、FO、DA随孕周增加而增大(P<0.05),与孕周呈显著正相关(均P<0.05);同一孕周组RA大于LA,PA大于AO。RA/LA、RV/LV、PA/AO、FO/AO比值恒定,与孕周不相关(P>0.05)。结论:超声心动图观测胎儿心脏大小与孕周相关性,为早期诊断心血管异常提供理论依据。

Objective To investigate the ultrasonic features of normal fetal heart size at different gestational weeks,and analyze its correlation with gestational age.Methods Divided 280 normal pregnant women and their fetuses from 20 to 36^(+6) weeks of gestation into group A,B,C,and D respectively according to different gestational weeks,and measured the left atrium(LA),left ventricle(LV),right atrium(RA),right ventricle(RV),aorta(AO),pulmonary artery(PA),foramen ovale(FO)and ductus arteriosus(DA).Calculated the ratios of RA/LA,RV/LV,PA/AO,FO/AO and analyzed the normal range of the four groups of parameters and the correlation with gestational age.Results The sizes of each chamber,AO,PA,FO and DA increased with the increase of gestational age(P<0.05),which were significantly positively correlated with gestational age(all P<0.05).RA was greater than LA and PA was greater than AO in the same gestational week group.The ratios of RA/LA,RV/LV,PA/AO,FO/AO were constant and had no correlation with gestational age(P>0.05).Conclusion Echocardiography is used to observe the correlation between fetal heart size and gestational age,so as to provide theoretical basis for early diagnosis of cardiovascular abnormalities.