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懷孕初期流產癥狀 懷孕初期流產的原因

出處：網絡收集 日期：2025-03-18 15:05:07 編輯：胖虎愛撩妹
　　有些沒有懷孕經驗的女性，不知道自己已經懷孕，不知不覺中遭遇了自然流產。所以女性朋友都應該了解一些懷孕流產的征兆。那么懷孕初期流產征兆有什么?懷孕初期流產的原因有哪些?趕快來看看吧。
 
　　首先我們先來了解下懷孕初期流產癥狀有什么
 
　　1、陰道流血且腹痛增加，小心流產的發(fā)生：由先兆流產發(fā)展而來，此時陰道流血量增多，陣發(fā)性下腹痛加重或出現陰道流液(胎膜破裂)。婦科檢查宮頸口已擴張，有時可見胚胎組織或胎囊堵塞于宮頸口內，子宮大小與停經周數相符或略小。
 
　　2、懷孕初期流產一定要小心不完全流產：妊娠產物已部分排出體外，尚有部分殘留于宮腔內，由難免流產發(fā)展而來。由于宮腔內殘留部分妊娠產物，影響子宮收縮，致使子宮出血持續(xù)不止，甚至因流血過多而發(fā)生失血性休克。
 
　　3、先兆流產：先出現少量陰道流血，繼之常出現陣發(fā)性下腹痛或腰背痛。婦科檢查宮頸口未開，胎膜未破，妊娠產物未排出，子宮大小與停經周數相符，妊娠有希望繼續(xù)者。經休息及治療后，若流血停止及下腹痛消失，妊娠可以繼續(xù);若陰道流血量增多或下腹痛加劇，可發(fā)展為難免流產。
 
　　上面介紹了懷孕初期流產癥狀有什么，接下來我們來看看懷孕初期流產的原因有哪些
 
　　造成流產的原因有：
 
　　1、遺傳基因缺陷：夫婦任何一方有染色體異?？蓚髦劣诖旧w異常的胚胎有50%~60%發(fā)生早期自然流產。
 
　　2、環(huán)境因素：影響生殖功能的外界不良因素很多，可以直接或間接對胚胎或胎兒造成損害。過多接觸某些有害的化學物質(如砷、鉛、苯、甲醛、氯丁二烯、氧化乙烯等)和物理因素(如放射線、噪音及高溫等)，均可引起流產。
 
　　3、母體因素
 
　　(1)全身性疾?。喝焉锲诨技毙圆。邿峥梢鹱訉m收縮而致流產;細菌毒素或病毒(單純皰疹病毒、巨細胞病毒等)通過胎盤進入胎兒血循環(huán)，使胎兒死亡而發(fā)生流產。此外，孕婦患嚴重貧血或心力衰竭可致胎兒缺氧，也可能引起流產。孕婦患慢性腎炎或高血壓，胎盤可能發(fā)生梗死而引起流產。
 
　　(2)生殖器官疾?。涸袐D因子宮畸形(如雙子宮、縱隔子宮及子宮發(fā)育不良等)、盆腔腫瘤(如子宮肌瘤等)，均可影響胎兒的生長發(fā)育而導致流產。宮頸內口松弛或宮頸重度裂傷，易因胎膜早破發(fā)生晚期流產。
 
　　(3)內分泌失調：黃體功能不足往往影響蛻膜、胎盤而發(fā)生流產。甲狀腺功能低下者，也可能因胚胎發(fā)育不良而流產。
 
　　(4)創(chuàng)傷：妊娠期特別是妊娠早期時行腹部手術或妊娠中期外傷，可刺激子宮收縮而引起流產。
 
　　4、胎盤內分泌功能不足：妊娠早期時，卵巢的妊娠黃體分泌孕激素外，胎盤滋養(yǎng)細胞亦逐漸產生孕激素。妊娠8周后，胎盤逐漸成為產生孕激素的主要場所。除孕激素外，胎盤還合成其他激素如β-絨毛膜促性腺激素、胎盤生乳素及雌激素等。早孕時，上述激素值下降，妊娠將難以繼續(xù)而致流產。
 
　　5、免疫因素：妊娠猶如同種異體移植，胚胎與母體間存在復雜而特殊的免疫學關系，這種關系使胚胎不被排斥。若母兒雙方免疫不適應，則可引起母體對胚胎的排斥而致流產。有關免疫因素主要有父方的組織相容性抗原、胎兒特異抗原、血型 抗原、母體細胞免疫調節(jié)失調、孕期母體封閉抗體不足及母體抗父方淋巴細胞的細胞毒抗體不足等。
 
　　以上就是“懷孕初期流產癥狀 懷孕初期流產的原因”的詳細內容，希望可以幫到大家!

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