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据文献报道剖宫产后产妇泌乳量和产后泌乳素（PRL）分泌降低［‘1。手术后的疼痛做为一种应激刺激，可使PRL明显增加。本文目的在于探讨剖宫产后实行硬膜外自控镇痛（PCEA）对PRL分泌有何影响，PRL与母乳量之间存在什么关系，以及镇痛对产妇TNF的影响。l资料与方法选择足月妊娠
It is reported in the literature after cesarean section maternal milk yield and postpartum prolactin (PRL) secretion decreased [1]. Postoperative pain as a stress stimulus, can make PRL significantly increased. The purpose of this paper is to investigate the effect of PCEA on the secretion of PRL after caesarean section and the relationship between PRL and breast milk volume and the effect of analgesia on maternal TNF. l Materials and Methods Select full-term pregnancy