媽媽育兒網(wǎng)
當(dāng)前位置: 主頁(yè) > 懷孕 > 癥狀 > 準(zhǔn)媽媽如何應(yīng)對(duì)胎兒臍帶繞頸

胎兒臍帶繞頸準(zhǔn)媽媽如何應(yīng)對(duì) 臍帶繞頸的危險(xiǎn)有哪些

出處：媽媽育兒網(wǎng) 日期：2016-08-23 11:36:55 編輯：七七
在過(guò)去，胎兒如果發(fā)生繞頸這樣的事情，那么媽媽基本上是會(huì)難產(chǎn)的?？赡軐?duì)于胎兒繞頸這個(gè)問(wèn)題，大家準(zhǔn)媽媽還不是很了解：因?yàn)椋涸趮寢尩淖訉m里并不是一直在老老實(shí)實(shí)的睡覺(jué)、安靜的成長(zhǎng)，而是不停動(dòng)來(lái)動(dòng)去、抓來(lái)抓去的，尤其孕中晚期，胎寶寶的本事就更大了，翻滾、拳打、腳踢樣樣精通，一不小心就可能造成臍帶繞頸的情況。

所以當(dāng)準(zhǔn)媽媽做完超聲檢查，得知胎寶寶臍帶繞頸了，她們是難免會(huì)擔(dān)憂和害怕，那么這種情況時(shí)，準(zhǔn)媽媽應(yīng)該做些什么來(lái)幫助胎兒“解除捆綁”呢？

臍帶繞頸的發(fā)生幾率大嗎？

據(jù)統(tǒng)計(jì)，大約20%～25%的胎兒都有臍帶繞頸，其中因?yàn)槟殠Ю@頸而使胎兒缺氧或致死的卻只有很少數(shù)。其中，繞頸一圈的寶寶占總生產(chǎn)數(shù)的20%-30%；纏繞兩圈的占2.5%-5%；纏繞3圈的僅占0.2%-0.5%；纏繞4圈以上的比例則微乎其微。

為什么會(huì)發(fā)生臍帶繞頸？

一般情況下，胎寶寶和臍帶都在準(zhǔn)媽媽的子宮里漂浮著，當(dāng)胎兒發(fā)育到一定階段時(shí)，就會(huì)在羊水中活動(dòng)，伸伸手和腳，甚至翻個(gè)跟斗，大多數(shù)時(shí)候胎兒和臍帶可以和平共處，但一不小心可能胎兒就會(huì)把手腳或身體和臍帶纏在一起。

當(dāng)空間足夠大的時(shí)候，胎寶寶可以再翻個(gè)身又繞出來(lái)（所以有時(shí)候超聲檢查看到臍帶繞頸而下次檢查時(shí)又發(fā)現(xiàn)不繞了），但是當(dāng)胎寶寶越長(zhǎng)越大，“羊水漂浮池”相對(duì)變小了，胎寶寶不再能大幅度地運(yùn)動(dòng)了，這時(shí)如果有臍帶繞頸，就沒(méi)那么容易脫身了。

臍帶繞頸一般是如何發(fā)現(xiàn)的？

通過(guò)B超檢查可清楚地看到胎兒是否有臍帶繞頸情況。用一般2D超聲檢查，其診斷率約為33.3%，如果應(yīng)用彩色多普勒超聲檢查，其診斷率約為78.9%，而3D和4D超聲檢查的診斷率接近100%。

出現(xiàn)臍帶繞頸時(shí)，產(chǎn)前可以通過(guò)B超檢查胎兒身體上有無(wú)臍帶壓跡確診，有經(jīng)驗(yàn)的B超醫(yī)師可以準(zhǔn)確地測(cè)出臍帶纏繞的周數(shù)。檢查纏繞是否影響到胎兒健康，可以通過(guò)胎兒電子監(jiān)護(hù)觀察胎兒心率的變化，如果出現(xiàn)胎心不規(guī)則的減速或變異幅度過(guò)大時(shí)，就應(yīng)考慮是臍帶受到牽拉、擠壓。

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