Gibb D M, Cardozo L D, Studd J W, Cooper D J
Br J Obstet Gynaecol. 1982 Apr;89(4):292-5. doi: 10.1111/j.1471-0528.1982.tb04698.x.
A prospective controlled study of 2000 patients to determine the incidence of postmaturity and the effect of a policy of non-induction of labour in prolonged pregnancy is reported. 'Certain postmaturity' was identified in 4% of the patients and was associated with an increased incidence of babies with Apgar scores of less than 5 at 1 min; induction of labour at 42 weeks gestation did not affect the neonatal outcome compared with that in patients allowed to go into spontaneous labour. Induction of labour in patients designated as 'certain postmature' and 'uncertain postmature' reduced the number of vaginal deliveries and increased the caesarean section rate from 9.6 to 26.7 and from 2.2 to 31.2% respectively. The failure to improve the perinatal outcome does not support or justify induction of labour for uncomplicated postmaturity.
本文报道了一项针对2000例患者的前瞻性对照研究，以确定过期产的发生率以及延长孕期不引产政策的影响。4%的患者被确定为“确定过期产”，且与出生后1分钟阿氏评分低于5分的婴儿发生率增加相关；与自然分娩的患者相比，妊娠42周引产对新生儿结局没有影响。对被指定为“确定过期产”和“不确定过期产”的患者进行引产，减少了阴道分娩的数量，并使剖宫产率分别从9.6%升至26.7%和从2.2%升至31.2%。未能改善围产期结局并不支持或证明对无并发症的过期产进行引产是合理的。
