Hofmann D, Carle-Grewe G
St. Vincenz-Frauenklinik, Hebammenlehranstalt Paderborn.
Zentralbl Gynakol. 1990;112(24):1525-40.
This report presents results of a retrospective study of infants delivered by the breech, which were according the attitude of this hospital mainly delivered vaginally. This mode of delivery was chosen for primiparae as well as for multiparae and independent of the fetal size measured by ultrasound. Indication for primary caesarean section was seen in only 45 cases out of 568 infants in breech situation. In most of these cases additional indications so as bleedings, placental insufficiency etc, were responsible for the decision of primary caesarean section. Breech presentations are associated to specialties during pregnancy and labour although being more often not related to breech presentation of the fetus as this study shows. Difficulties of spontaneous breech delivered infants were seen rarely. Within the reported cases were 5 of elevated arms, 2 with difficulties in developing the arms and 3 with difficulties in developing the after coming head. Indication for secondary caesarean section were mainly caused by standstill within delivery because of relative disproportion, imminent intrauterine hypoxia and cord prolapse being more often associated to breech presentation. Most important for the possibility of spontaneous breech delivery is the coming deeper of breech during expulsive period. The well known fact of increased number of congenital malformations and anomalies associated to breech presentation were also described in this study. The comparison of the Apgar scores of infants being delivered vaginally or by caesarean section did not show any negative influence of the vaginal mode. This results are independent of different birth weight groups. Therefore there is no evidence to support the recommendation to increase caesarean section rate. Cases of neonatal death--only 13 out of 568 breech infants are discussed casuistically. As a conclusion the authors are confirmed in their conservative attitude and they think the endeavour of spontaneous delivery of breech presentation is justified in all cases unless there are additional indications for caesarean section.
本报告展示了一项对臀位分娩婴儿的回顾性研究结果,在本院,此类分娩大多通过阴道进行。初产妇和经产妇均选择这种分娩方式,且与超声测量的胎儿大小无关。在568例臀位分娩的婴儿中,仅45例有剖宫产指征。在大多数这些病例中,诸如出血、胎盘功能不全等其他指征是决定剖宫产的原因。尽管本研究表明,臀位分娩在孕期和分娩过程中与一些特殊情况相关,但更多时候与胎儿臀位并无关联。很少见到臀位自然分娩的婴儿出现困难情况。在报告的病例中,有5例上肢上举、2例上肢娩出困难、3例后出头娩出困难。剖宫产的指征主要是分娩停滞,原因包括相对头盆不称、即将出现的宫内缺氧以及脐带脱垂,这些情况在臀位分娩中更为常见。对于臀位自然分娩可能性而言,最重要的是在娩出期臀位下降得更深。本研究还描述了与臀位分娩相关的先天性畸形和异常数量增加这一众所周知的事实。对经阴道分娩或剖宫产婴儿的阿氏评分进行比较,未发现阴道分娩方式有任何负面影响。这些结果与不同出生体重组无关。因此,没有证据支持提高剖宫产率的建议。新生儿死亡病例——568例臀位分娩婴儿中仅13例进行了具体分析。总之,作者坚持其保守态度,认为除非有剖宫产的其他指征,否则在所有情况下尝试臀位自然分娩都是合理的。