论文部分内容阅读
有报道单胎IUGR发病率为5-7%,双胎增至12-47%.近来发现双顶径(BPD)不能精确反映胎头大小,本文作者拟用多参数以提高诊断双胎IUGR及生长不均称的准确性.研究对象为42例双胎妊娠,孕26周前每4-6周、孕26周后2-4周超声扫描各一次直至分娩.孕龄由月经史结合超声测量BPD和股骨长度(FL)确定.测量参数有BPD、头围(HC)、腹围(AC)、FL、头/腹围比率(H/A)、估计胎儿体重(EFW)及有无羊水过少.由BPD、FL、HC和AC绘制的诺模图(Nomograms)用以确定孕周,根据BPD和AC确定EFW.严重羊水过少指羊水囊中两个垂直平面<1cm.超声可疑IUGR指估计胎儿体重低于相应学龄出生体重第10百分位,同样新生儿出生时也以此标准分类.不均称生长指双胎中
It has been reported singleton IUGR incidence of 5-7%, twins increased to 12-47%. Recently found that biparietal diameter (BPD) can not accurately reflect the fetal head size, the author intends to use multiple parameters to improve the diagnosis of twins IUGR and 42 cases of twin pregnancy, 26 weeks before pregnancy every 4-6 weeks, 2-4 weeks after 26 weeks of pregnancy, ultrasound scan until the delivery of each gestational age by menstruation combined with ultrasound measurements BPD, and length of femur (FL) were measured.The measurement parameters were BPD, HC, AC, FL, H / A, estimated fetal weight (EFW) and amniotic fluid Less. Nomograms plotted by BPD, FL, HC, and AC to determine gestational age and EFW based on BPD and AC. Severe polyhydramnios refer to two vertical planes <1 cm in the amniotic sac. Ultrasound suspicious IUGR means The estimated fetal weight is lower than the 10th percentile of the corresponding school-age birth weight, and the same is true when a newborn child is born.