关于“产前B超”的那些事

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                    <p style="">　　<span style="margin: 0px; padding: 0px; max-width: 100%; color: rgb(255, 0, 0); box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 36px; box-sizing: border-box !important; word-wrap: break-word !important;">现</span></strong></span><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;">在的孩子越来越少，越来越金贵，怀孕就成了女人一生中最大的事情，孕育一个健康宝宝，成了孕妇及其家庭的最终心愿。在现在这个开放的社会环境中，见惯了不孕、流产、宫外孕、畸形儿的伟大女性们，一旦怀疑怀孕，就火急火燎的奔到医院，要求做B超，急切的想确定是不是真的怀孕了，是不是怀了一个健康的宝宝，有没有畸形等等一系列问题，真是操碎心呀。那下面我们就聊聊孕期超声检查的那些事，大致可以分为以下几类：</span></p><p style=""><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;">　　<span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; color: rgb(255, 0, 0); box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">1.怀孕5~6周超声检查</strong></span></span></p><p style=""><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;">　　妊娠早期超声检查主要是确定宫内妊娠，排除异位妊娠和妊娠滋养细胞疾病。一般在停经35天，宫腔内可以看见圆形或者是椭圆形的妊娠囊。停经42天，可以看见胚芽以及原始心管搏动，还可以确定双胎类型，帮助核对孕周。所以，一般情况下，刚刚测出来怀孕到孕5周之前，B超检查对于确定怀孕与否是没有任何意义的。</span></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></span></p><p style=""><img data-s="300,640" data-type="png" src="http://mmbiz.qpic.cn/mmbiz/K8xHqh35vY4eN45ic56SAB1BBKvYH71fGzWWwUtxDX8F2ibS7ia60yFCkrdUA6xwjpHrmrYobdejAofgbDry8dgyg/0?wx_fmt=png" data-ratio="0.5903614457831325" data-w="415" src="http://mmbiz.qpic.cn/mmbiz/K8xHqh35vY4eN45ic56SAB1BBKvYH71fGzWWwUtxDX8F2ibS7ia60yFCkrdUA6xwjpHrmrYobdejAofgbDry8dgyg/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5" style="margin: 0px; padding: 0px; box-sizing: border-box !important; word-wrap: break-word !important; width: auto !important; visibility: visible !important;"  /></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></span></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;">　　<span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; color: rgb(255, 0, 0); box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">2.怀孕11~13+6周超声检查</strong></span></span></p><p style=""><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;">　　一般在这个阶段，医生会建议孕妇行B超+NT的检查。NT指的是胎儿的颈项透明层，是胎儿的颈部后部皮肤下液体生理性聚集的超声定义，NT正常应≤3mm。CRL指胎儿头臀长度，正常应该在45~84mm。如果胎儿发育正常 , 则NT的厚度与头臀的长度呈正相关，一旦头臀长度增长，则NT厚度增加。NT厚度往往和非整数倍染色体异常、先天异常、遗传综合征、先天性心脏病等息息相关。因此筛查NT厚度检测显得至关重要。此时超声检查可以排除严重的胎儿畸形等，根据头臀长度较准确估计孕周，矫正预产期，确定双胎妊娠绒毛性，判断胚胎发育情况。</span></p><p style=""><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;">　　<span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; color: rgb(255, 0, 0); box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">3.怀孕16~21周B超检查</strong></span></span></p><p style=""><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;">　　在这个阶段的超声检查，需要注意的是对胎儿NF的测量。NF指的是胎儿颈部皮肤皱褶厚度，正常应≤6cm。NF作为超声重要软指标之一，对的胎儿畸形、染色体病的筛查具有一定的敏感性和特异性。</span></p><p style=""><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style=""><img data-s="300,640" data-type="png" src="http://mmbiz.qpic.cn/mmbiz/K8xHqh35vY4eN45ic56SAB1BBKvYH71fGgHePbbU8q2McCxaibTsp4lnYSib9sABqXibNFLwxYH8mxGIX3J6DW9pMQ/0?wx_fmt=png" data-ratio="0.7243460764587525" data-w="" src="http://mmbiz.qpic.cn/mmbiz/K8xHqh35vY4eN45ic56SAB1BBKvYH71fGgHePbbU8q2McCxaibTsp4lnYSib9sABqXibNFLwxYH8mxGIX3J6DW9pMQ/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5" style="margin: 0px; padding: 0px; box-sizing: border-box !important; word-wrap: break-word !important; width: auto !important; visibility: visible !important;"  /></p><p style=""><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;">　　<span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; color: rgb(255, 0, 0); box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">4.怀孕22~26周B超检查</strong></span></span></p><p style=""><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;">　　此时主要进行胎儿系统超声或是四维超声，但是最佳时间是孕23~25周。这个阶段的超声检查在是最重要的，四维超声能够很好对胎儿体表进行系统检查，以便筛查产前胎儿的畸形，例如唇裂、脊柱裂、大脑、肾脏、心脏、骨骼发育不良等，以便尽早进行治疗。</span></p><p style=""><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style=""><img data-s="300,640" data-type="png" src="http://mmbiz.qpic.cn/mmbiz/K8xHqh35vY4eN45ic56SAB1BBKvYH71fG9iaJTcBDhca8kYTFQpsgvtvYfokGnCew9e8J9jxx3m4qPLUcvCuo9bw/0?wx_fmt=png" data-ratio="0.7896825396825397" data-w="252" src="http://mmbiz.qpic.cn/mmbiz/K8xHqh35vY4eN45ic56SAB1BBKvYH71fG9iaJTcBDhca8kYTFQpsgvtvYfokGnCew9e8J9jxx3m4qPLUcvCuo9bw/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5" style="margin: 0px; padding: 0px; box-sizing: border-box !important; word-wrap: break-word !important; width: auto !important; visibility: visible !important;"  /></p><p style=""><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;">　　<span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; color: rgb(255, 0, 0); box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">5.怀孕30~32周胎儿常规超声检查</strong></span></span></p><p style=""><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;">　　此时进行胎儿常规超声检查，明确胎位，测量胎儿大小、脐血流情况等等。</span></p><p style=""><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;">　　<span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; color: rgb(255, 0, 0); box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">6.怀孕大于37周胎儿常规超声检查</strong></span></span></p><p style=""><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;">　　此时的常规超声检查主要用于估计胎儿体重，双顶径，确定胎盘位置，估计脐带、羊水等情况，以便来预测分娩方式，产时情况。</span></p><p style=""><br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 18px; box-sizing: border-box !important; word-wrap: break-word !important;">　　所以说，定期超声检查在孕期对胎儿十分重要。但是，也并非越早越好、越多越好。母亲们要根据自身的实际情况，听从医生的意见，这样才能顺利地度过孕产期，迎接一个健康宝宝的出世。</span></p><p style=""><span style="margin: 0px; padding: 0px; max-width: 100%; font-size: 14px; background-color: rgb(249, 249, 249); font-family: Arial, Verdana, sans-serif; line-height: 24px; box-sizing: border-box !important; word-wrap: break-word !important;">广州市设备维修有限公司</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; max-width: 100%; min-height: 1em; white-space: pre-wrap; color: rgb(62, 62, 62); font-size: 12px; line-height: 24px; background-color: rgb(255, 255, 255); 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