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    假如(ru)胎儿太(tai)大,母亲的骨盆就无(wu)法容纳胎儿的头(tou)部.母亲的骨盆狭窄(zhai)或畸形.分(fen)娩(mian)时(shi)胎儿产生缺氧,短(duan)期(qi)内无(wu)法顺利经过阴道分(fen)娩(mian).母亲患有(you)严重的妊(ren)娠高血压综合征(zheng)等疾(ji)病,无(wu)法自(zi)然分(fen)娩(mian).自(zi)然分(fen)娩(mian)有(you)3个(ge)阶段,只需孕妇搞(gao)清楚,实际上,自(zi)然分(fen)娩(mian)并非很吓人,我们一起(qi)来(lai)说明一下分(fen)娩(mian)的3个(ge)阶段.
    休息、睡觉(jue)、吃饭、喝酒、聊天或听(ting)音乐时(shi)(shi),收(shou)缩是间歇(xie)性的.在这段时(shi)(shi)间,子(zi)宫收(shou)缩停止(zhi),收(shou)缩时(shi)(shi)间长,收(shou)缩时(shi)(shi)间较短,因此可(ke)有大(da)部分时(shi)(shi)间休息.尽管(guan)它(ta)时(shi)(shi)常被突然之间的疼痛打断,但是有必要试着(zhe)放轻松,花时(shi)(shi)间休息或是吃东西.当你(ni)睡不着(zhe)觉(jue),可(ke)听(ting)音乐和人沟通交流.聊天.
    当子宫(gong)(gong)收缩开(kai)始时,吸(xi)(xi)气小(xiao)(xiao)腹,做(zuo)一个随(sui)意(yi)、喜欢的姿势(shi).当子宫(gong)(gong)收缩开(kai)始时,可采用(yong)腹部呼吸(xi)(xi)来(lai)放轻松小(xiao)(xiao)腹.分娩的第(di)二阶段(1-2小(xiao)(xiao)时)是最终冲刺(ci)、搭(da)配力(li)量(liang)、可以看到(dao)胎儿头部、断(duan)水、用(yong)力(li)和深呼吸(xi)(xi).
    子(zi)(zi)(zi)宫(gong)(gong)收(shou)(shou)(shou)缩力(li),无子(zi)(zi)(zi)宫(gong)(gong)收(shou)(shou)(shou)缩.依据子(zi)(zi)(zi)宫(gong)(gong)收(shou)(shou)(shou)缩,当有收(shou)(shou)(shou)缩时,你一定要在收(shou)(shou)(shou)缩后(hou)放轻松.当你用力(li),你就会觉得非常累(lei).假如子(zi)(zi)(zi)宫(gong)(gong)收(shou)(shou)(shou)缩无法正常的工作,你将(jiang)无法有效地搭配子(zi)(zi)(zi)宫(gong)(gong)收(shou)(shou)(shou)缩和分娩过程(cheng).
    正(zheng)确的锻炼方式是:当收缩开始时(shi),当疼痛来临时(shi),你(ni)一定(ding)要(yao)(yao)深呼吸(xi),随后闭上嘴唇,屏息,开始用力.注意力要(yao)(yao)放到底端,像一个硬的干凳(deng)子.停止(zhi)将停止(zhi).假(jia)如助产士想(xiang)让(rang)你(ni)别再用力了(le),你(ni)一定(ding)要(yao)(yao)大声喊(han)"哈,哈".你(ni)不(bu)能再迫(po)使自己了(le).不(bu)然会(hui)导致会(hui)阴(yin)撕裂.