Panburana P, Ajjimakorn S, Jaovisidha A, Tangkajiwangkoon P
Department of Obstetrics and Gynaecology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand.
J Med Assoc Thai. 2000 Oct;83(10):1211-4.
The purpose of this study was to examine the correlation between the fetal heart rate at 10-14 weeks and birthweight at term. At the fetal medicine unit, Ramathibodi Hospital, the screening for Down's syndrome at 10-14 weeks' gestation by ultrasound has been ongoing since January 1997. Transabdominal ultrasound examination is routinely performed for the crown-rump length, nuchal translucency thickness and fetal heart rate. The fetal heart rate is measured over four to six cardiac cycles by using the pulsed Doppler technique. One thousand and fourteen term singleton pregnancies that resulted in phenotypically normal live births were studied. The study was done was carried out at 10-14 weeks of gestation (mean 12.27 weeks) from January 1997 to November 1997. The mean patient age was 26.78 years old. The mean gestational age and birthweight were 38.83 weeks and 3,097.83 grams respectively. The incidence of low birthweight (less than 2,500 grams) was 14.2 per cent. Regression analysis demonstrated no significant relation between fetal heart rate at 10-14 weeks and birthweight at term. In conclusion, the result of this study revealed that there was no correlation of the fetal heart rate at 10-14 weeks' gestation and birthweight at term.
本研究的目的是检测孕10 - 14周时的胎儿心率与足月出生体重之间的相关性。自1997年1月起，拉玛蒂博迪医院的胎儿医学科一直在进行孕10 - 14周时通过超声筛查唐氏综合征的工作。经腹超声检查常规测量头臀长度、颈部透明带厚度和胎儿心率。使用脉冲多普勒技术在四到六个心动周期内测量胎儿心率。研究了1014例足月单胎妊娠且出生表型正常的活产病例。该研究于1997年1月至1997年11月在孕10 - 14周（平均12.27周）进行。患者平均年龄为26.78岁。平均孕周和出生体重分别为38.83周和3097.83克。低出生体重（低于2500克）的发生率为14.2%。回归分析表明，孕10 - 14周时的胎儿心率与足月出生体重之间无显著相关性。总之，本研究结果显示，孕10 - 14周时的胎儿心率与足月出生体重之间不存在相关性。
