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胎儿生长受限危险因素及分娩时机的分析(3)
http://www.100md.com 2015年12月5日 中国医学创新 2015年第34期
     3.2 FGR终止妊娠时机及围产儿结局 本研究显示围产儿预后与孕周密切相关,随着孕周延长,新生儿儿体重增加,新生儿窒息和死亡率下降,故尽量延长孕周是改善FGR围产儿预后的关键因素。一般认为,FGR的治疗在孕32周前开始疗效最佳,孕36周后因胎盘老化疗效较差。那么,除及早诊断及早治疗FGR外,适时采取适宜的分娩方式终止妊娠,使胎儿尽早脱离宫内慢性缺氧环境,及时接受宫外治疗,也是提高围产儿存活率的又一重要环节。美国妇产科协会(American College of Obstetricians and Gynecologists,ACOG)2013版胎儿生长受限的诊治指南指出分娩时机如下:(1)单独的FGR在孕38周0/7 d~39周6/7 d终止妊娠;(2)在胎儿生长受限伴随额外的不良妊娠因素时,在孕34周0/7 d~37周6/7 d终止妊娠[15]。本研究中,新生儿窒息率依次降低,各组间差异均有统计学意义(P<0.05),新生儿死亡率依次降低,提示围产儿结局与孕周密切相关,在条件允许下积极处理相应并发症,可延长孕周至足月后终止妊娠。若条件不允许,如母亲存在妊娠期高血压疾病、严重心脏病等,继续妊娠对母儿风险较大时,甚至可以提早至孕32周终止妊娠,也不会明显增加围产儿死亡率,同ACOG提出的分娩时机一致。
, 百拇医药
    综上所述,FGR是产科的严重并发症,建立健全围产期保健网,加强围产期保健知识宣教,合理营养,积极治疗妊娠期并发症及合并症,对高危人群进行筛查,早期诊断,早期治疗,可降低FGR的发生率。选择适宜的分娩时机,根据条件权衡利弊适时适式终止妊娠,有利于改善FGR儿的预后,提高围产儿存活率及生存质量。

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    (收稿日期:2015-06-10) (本文编辑:周亚杰), 百拇医药(崔世红 孙俊燕 陈娟 李园园 杭中霞 申琳娜 职云晓 高亚南)
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