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<td height="30" colspan="2" class="main_ArticleTitle" style="word-break:break-all;Width:fixed">原因不明性不孕症有哪些常见原因?</td>
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<td colspan="2" bgcolor="FFE3F3"> 更新时间:2008-6-18 18:39:10 【字体:<a href="javascript:fontZoomA();" class="top_UserLogin">小</a> <a href="javascript:fontZoomB();" class="top_UserLogin">大</a>】</td>
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<font face="Arial" color="#000000"> 原因不明不孕症仅指夫妇双方经常规不孕症检查,夫妇都具备了受孕的三个基本条件。但影响受孕的因素是多方面的,常见的原因不明性不孕症相关的病因如下:<br />
⑴ 盆腔子宫内膜异位症:子宫内膜异位症是不孕的主要原因之一,内异症并发不孕率高达30%~40%,中、重度的异位症易被发现的诊断,但许多轻度<br />
内异症,可无临床症状,但恰可造成不孕。<br />
⑵ 免疫因素:免疫因素以往并没有作为不孕常规检查项目。目前正渐被重视,抗精子抗体、抗卵透明带抗体,抗子宫内膜抗体等对精子,卵子结合,受精和胚胎着床均有一定影响,而致免疫性不孕,它约占不孕总数的10%~20%。<br />
⑶ 宫颈粘液因素:宫颈粘液的物理、化学性质的改变均可直接影响到精子的生存活力及穿透能力。假如排卵期无相应的质稀薄透明,似蛋清样的粘液,不利于精子穿透宫颈,影响受精。<br />
⑷ 子宫内膜因素:子宫内膜对雌激素反应差,排卵期子宫内膜薄,不利于受精卵种植。<br />
⑸ 排卵假象:在不孕妇女中约有20%~30%在月经周期中基础体温可出现双相。子宫内膜在月经后期有分泌反应,但实际尚并无排卵,这就是卵泡未破裂黄素化综合征,体内有一定孕激素水平,但未排卵。<br />
⑹ 卵巢黄体功能不全:虽有排卵,但黄体功能不全,孕激素分泌不足,而使子宫内膜分泌不良,不利于受精卵着床。<br />
⑺ 年龄因素:35岁以上的女性,非凡是40岁以上者,卵巢功能和卵子的内在质量下降,虽然各项检查均属正常,但自然生育力已下降。<br />
⑻ 子宫发育因素:子宫发育不良,宫腔容积较小,内膜较薄,不利于受精卵着床。<br />
⑼ 精神、心理因素:精神紧张、心理因素不稳定,可影响性功能和丘脑-垂体-卵巢性腺周的协调,从而影响月经周期及排卵功能。<br />
以上因素均可造成不孕,如能发现这些原因,积极治疗,都能获得良好的效果。</font>
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<td width="787"><li>上一篇文章: <a class='LinkPrevArticle' href='/Article/506.html' title='文章标题:子宫畸形引起的女性不孕的临床表现
作 者:admin
更新时间:2008-6-18 18:39:06'>子宫畸形引起的女性不孕的临床表现</a></li><br>
<li>下一篇文章: <a class='LinkNextArticle' href='/Article/508.html' title='文章标题:子宫发育异常
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更新时间:2008-6-18 18:39:14'>子宫发育异常</a></li></td>
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