1·AIM: to determine the effect of ritodrine on preterm Labour treatment.
目的：观察利托君防治早产的效果。
2·The primary obstetric causes of death were preterm Labour (34%) and intrapartum asphyxia (21%).
主要的产科死因是早产(34%)和产时窒息(21%)。
3·This research reveal the mechanisms of onset of labour and provide a new method for prevention and therapy of preterm labour.
此项研究为揭示分娩动因提供新的思路，为早产的预防和治疗提供新的手段。
4·L - type calcium antagonist nifedipine can decrease calcium partially, but cannot block the calcium signal of contraction completely. Nifedipine has some limitations on treating preterm Labour.
心痛定可部分降低钙量，但不能完全阻断钙信号，该药治疗早产有局限性。
5·The four laeding causes accounting for 68. 5 % of . 127 perinatal deaths were malformation, complications of the cord, preterm, and obstructed labour or birth trauma.
围产儿死亡的前四位死因依次为先天畸形、脐带因素、早产、难产与产伤，累计占全部围产儿死亡的68．5％。