The role of sexual intercourse as a method for induction of labour is uncertain.
Human sperm contains a high amount of prostaglandin, a hormone-like substance which ripens the cervix and helps labour to start. Sometimes it is necessary to help start labour and it has been suggested that sexual intercourse may be an effective means. However, there is not enough evidence to show whether sexual intercourse is effective or to show how it compares with other methods. More research is needed.
阅读完整摘要
The role of prostaglandins for cervical ripening and induction of labour has been examined extensively. Human semen is the biological source that is presumed to contain the highest prostaglandin concentration. The role of sexual intercourse in the initiation of labour is uncertain. The action of sexual intercourse in stimulating labour is unclear, it may in part be due to the physical stimulation of the lower uterine segment, or endogenous release of oxytocin as a result of orgasm or from the direct action of prostaglandins in semen. Furthermore nipple stimulation may be part of the process of initiation.
This is one of a series of reviews of methods of cervical ripening and labour induction using standardised methodology.
研究目的
To determine the effects of sexual intercourse for third trimester cervical ripening or induction of labour in comparison with other methods of induction.
检索策略
The Cochrane Pregnancy and Childbirth Group's Trials Register (June 2007) and bibliographies of relevant papers.
纳入排除标准
Clinical trials comparing sexual intercourse for third trimester cervical ripening or labour induction with placebo/no treatment or other methods listed above it on a predefined list of labour induction methods.
资料收集与分析
A strategy was developed to deal with the large volume and complexity of trial data relating to labour induction. This involved a two-stage method of data extraction.
主要结果
There was one included study of 28 women which reported very limited data, from which no meaningful conclusions can be drawn.
作者结论
The role of sexual intercourse as a method of induction of labour is uncertain. This is an important issue to pregnant women and their partners. There is a need for well-designed randomised controlled trials to assess the impact of sexual intercourse on the onset of labour. Any future trials investigating sexual intercourse as a method of induction need to be of sufficient power to detect clinically relevant differences in standard outcomes.
