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将我院１９８５年５月１９９３年４月分娩的前置胎盘早产儿３５例与同期分娩的孕母无并发症的３５例早产儿对照，以麦锡卡法（ＭＳＣＡ－ＣＲ）双盲测定其智能发育情况，并结合围产期情况进行回顾性分析。结果表明：前置胎盘早产儿弱智发生率明显高于一般早产儿。（Ｐ＜０．０５）在早产儿中体重＜２０００ｇ的较≥２０００ｇ的智低发生率高（Ｐ＜０．０１）。前置胎盘早产儿中，孕母产前出血≥４００ｍｌ者较＜４００ｍｌ者智低发生率高。两组比较有显著差异。前置胎盘早产儿智低发生率与产前出血次数及前置胎盘类型无关。入院期待治疗７天以上者产前出血量明显少于治疗７天以下者。提示：（１）减少前置胎盘产前出血量对提高出生儿童智能十分重要。（２）期待治疗时间长可使总出血量减少从而对其出生儿童智能有积极影响。
In our hospital in May 1985 May 1993 April delivery of placenta previa 35 cases of premature infants with concurrent delivery of 35 cases of premature children without complications, double-blind determination of the use of methimazole (MSCA-CR) Intelligence development, combined with perinatal conditions were retrospectively analyzed. The results show that: the incidence of premature placenta preterm children was significantly higher than the average premature children. (P <0.05), the prevalence of Chi-Chi in patients whose weight was less than 2000g in preterm infants was higher than that in patients with premature infants (P <0.01). Preterm placenta premature children, prenatal bleeding ≥ 400ml were less than <400ml, the incidence of low IQ. There were significant differences between the two groups. Premature infants with premature placenta premature children with low incidence of prenatal bleeding and placenta previa type has nothing to do. Expect to be admitted to hospital for more than 7 days of prenatal bleeding was significantly less than the treatment of 7 days or less. Tip: (1) to reduce the amount of placenta previa bleeding to improve the intelligence of birth children is very important. (2) Expecting a long period of treatment can reduce the total amount of bleeding and thus have a positive impact on the intelligence of the child at birth.