Schutte M F, van Hemel O J, van de Berg C, van de Pol A
Eur J Obstet Gynecol Reprod Biol. 1985 Jun;19(6):391-400. doi: 10.1016/0028-2243(85)90137-6.
In 1982, nationwide registration of obstetric data was instituted in The Netherlands with about 70% of all Dutch hospitals participating. The resultant data from 57819 singleton pregnancies in vertex or breech presentation at delivery was studied. The vertex and breech groups were compared. The proportion of breech presentations relative to vertex presentations was greater in low gestational age infants and those of low birthweight. After correction for gestational age and birthweight, the perinatal mortality was higher in the breech groups than in the vertex groups. Congenital malformations occurred more frequently in the breech group but, even after exclusion of infants with congenital malformations, perinatal mortality remained higher in the breech group at any gestational age. Caesarean section was more frequently performed in the breech group than in the vertex group but did not appear to improve the outcome of breech presentation. It is possible that breech presentation is not coincidental but is a consequence of poor fetal quality, in which case medical intervention is unlikely to reduce the perinatal mortality associated with breech presentation to the level associated with vertex presentation.
1982年，荷兰开始进行全国性产科数据登记，约70%的荷兰医院参与其中。对分娩时为头位或臀位的57819例单胎妊娠的最终数据进行了研究。对头位组和臀位组进行了比较。低孕周婴儿和低出生体重婴儿中臀位分娩的比例相对于头位分娩更高。在校正孕周和出生体重后，臀位组的围产期死亡率高于头位组。先天性畸形在臀位组中更常见，但即使排除先天性畸形婴儿后，臀位组在任何孕周的围产期死亡率仍然更高。臀位组剖宫产的实施频率高于头位组，但似乎并未改善臀位分娩的结局。臀位分娩可能并非偶然，而是胎儿质量差的结果，在这种情况下，医学干预不太可能将与臀位分娩相关的围产期死亡率降低到头位分娩相关的水平。
