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懷孕九個月羊水值多少是正常的？羊水過多和過少會有哪些危害？

出處：媽媽育兒網 日期：2020-11-14 11:40:32 編輯：璇子
當女性懷孕了之后，女性的子宮內也是會有羊水的，而女性的羊水也是有一個最佳的量的，那么，我們一起來看看，懷孕九個月羊水值多少是正常的？

懷孕九個月羊水值多少是正常的？

對于懷孕九個月的女性來說，羊水的正常值是在300ml~2000ml之間的。
所謂的羊水，則就是可以很好地減緩外界的震動給寶寶造成的影響的。
也就是可以很好的避免寶寶胎動的時候對準媽媽造成的不舒服的感覺。
當然了，羊水種也是有抑菌的成人的，并且抑菌成分降低寶寶感染的幾率，羊水的潤滑作用幫助準媽媽順利分娩，醫(yī)生通過羊水探測可以了解寶寶的健康狀況。
從正常情況下，孕16周羊水一般是250mL，孕36周可達到1000mL。孕晚期出現(xiàn)羊水少于300mL或超過2000mL的兩種情況都對寶寶發(fā)育極為不利，需要密切監(jiān)護。

羊水過多和過少會有哪些危害？

羊水過多的危害介紹
妊娠期間羊水量超過2000ml，稱為羊水過多。發(fā)生率為0.5%～1%。羊水量在數(shù)日內急劇增多，稱為急性羊水過多；羊水量在較長時間內緩慢增多，稱為慢性羊水過多。
羊水過多對母體及胎兒均能產生不良的影響。由于子宮增得過大，使膈肌上移，壓迫胸腔，引起母體呼吸急促，心跳加快，消化不良等。腹壓增高，造成下肢靜脈曲張，下肢及外陰水腫。在分娩時，容易引起宮縮乏力和產后出血。羊水過多時，胎兒在宮內過于浮動，易產生胎位不正。破水時，?？梢娔殠摯?。
羊水過少的危害介紹
當羊水量<300ml時稱為羊水過少。許多先天畸形特別是泌尿系統(tǒng)畸形與羊水過少有關，如先天性腎缺如、腎發(fā)育不良、多囊腎和尿道狹窄或閉鎖等。此外，胎盤功能減退、過期妊娠，胎盤老化等均可引起羊水量減少。
孕婦經常因胎動而感疼痛，腹圍及子宮底高度均小于妊娠月份，胎兒活動受限，自然回轉不易，故臀先露多見。妊娠時間延長，常超過預產期2～3周。分娩過程中常出現(xiàn)原發(fā)性宮縮乏力或不協(xié)調性宮縮，宮口擴張緩慢，易發(fā)生第一產程延長。羊水極少，黏稠，多呈黃綠色，可導致胎兒缺氧。由于羊水缺乏造成種種發(fā)育畸形，如羊水過少發(fā)生于妊娠早期，部分胎兒體表可與羊膜粘連，或形成羊膜帶，使手指或肢體離斷；如羊水過少發(fā)生于妊娠晚期，則胎兒皮膚干燥，如羊皮紙狀。因羊水少，胎兒在子宮內處于強制性體位，易受壓迫而引起特殊的肌肉骨骼畸形，如手足畸形、背曲、斜頸、上下肢彎曲等。

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