Two hundred forty pregnant women pre sented with first-trimester threatened abortion were examined by transvaginal ultrasound.Women with a slow fetal heart rate of less than120beats per minute may eventually b e at in...Two hundred forty pregnant women pre sented with first-trimester threatened abortion were examined by transvaginal ultrasound.Women with a slow fetal heart rate of less than120beats per minute may eventually b e at increased risk for pregnancy loss.展开更多
文摘Two hundred forty pregnant women pre sented with first-trimester threatened abortion were examined by transvaginal ultrasound.Women with a slow fetal heart rate of less than120beats per minute may eventually b e at increased risk for pregnancy loss.
