推荐回答(4个)
排卵试纸——有一定误差
排卵试纸是测人尿液中黄体生成素(LH),黄体生成素浓度越高,所显示的颜色越深,代表越接近峰值。使用排卵试纸,就是关注其峰值出现的时间。用排卵试纸测出第二道杠(检测线)颜色最深时,代表强阳、峰值到来,其后便开始排卵。因此,当用排卵试纸测到强阳时,24小时内同房,受孕概率高。试纸会先出现弱阳,这时应每天都测;接近强阳时,更要加大测试频率,一日要测四五次,直到峰值出现,尽早同房。
不过,排卵试纸准确度很受生产工艺的制约,导致有的测得准,有的则不准。而且,黄体生成素在尿中不像在血液中那么高,因此通过尿液检测的排卵试纸有一定的误差。另外,有时候排卵试纸测到强阳,但卵泡不破,卵子无法排出,也不会受孕。还有人抱怨,第二道杠总是若深若浅,很难判断是否达到峰值。有一定使用经验的人,才会用得比较好。
测基础体温——比排卵试纸准确
在家里方便操作的,除了排卵试纸,还有更好的选择吗?妇科专家介绍,基础体温是更适合居家、准确度更高的方法。女性的基础体温会随月经周期变化:排卵前基础体温逐渐下降,在排卵日基础体温下降到最低点,排卵后基础体温骤然升高,一直维持到下次月经来潮前又开始下降。但是,要测定的必须是基础体温,即清晨一睁眼不起身,不说话,空腹、静息下测得的体温。
专家指出,了解基础体温的变化,是掌握怀孕时机的简单方法。女性的基础体温与生理周期一样有规律,在高温期与低温期之间周而复始地变化着。正常女性的基础体温呈双相曲线,从月经来潮日至排卵日为低温期,约持续两周;从排卵日至下一个月经来潮日为高温期,也持续两周。其“交接点”就是排卵日。在接近排卵时就可隔天同房,利用卵子有24小时的受孕能力、精子有72小时存活时间的特性,增加受孕概率。
不过,通过基础体温测排卵也很讲究:一是要选择医用级的体温持续监测设备如体温Holter,佩戴整夜轻松测得最低点,自动绘制体温曲线更准确;二是应从来月经来潮就开始测,到下次来月经,坚持测一个月,才能得到基础体温的整体变化;三是熬夜失眠、感冒、嗓子痛、吃药会影响基础体温的准确性。
监测基础体温相比用排卵试纸准确率高,还可测得月经来潮的时间和有否怀孕:因为排卵后到下次月经来潮前基础体温是逐步升高的,所以当测得基础体温开始下降,说明24小时左右会来月经;而当测得高温的基础体温连续超过20天,就说明怀孕了。
阴道B超——观察更直观但需频繁跑医院
阴道B超有排卵试纸和测基础体温所不具备的优点——可得知卵泡发育得好不好及卵泡是否老化,还能看子宫内膜的情况。阴道B超可看到卵泡发育成怎样,越饱和越好,椭圆的就不如圆的好,发育得好的卵泡受孕概率更高。卵泡长到18~25mm破裂是最健康的,太大则卵泡老化,太小卵泡不够成熟就破裂,都不好。
阴道B超监测排卵应从来月经的第十天开始,初始隔天或隔2天测一次;当监测到卵泡有15mm后,每天监测一次;卵泡发育到18mm左右时隔天同房;要提高受孕率,发现排卵后再补同房一次。阴道B超监测排卵,应该坚持一个监测周期,因为这是个渐进过程,可了解卵泡有无持续发育。
女性测排卵的方法有很多种,在医院测排卵通常是做阴道超声,从来月经的第10天开始监测,通过超声监测卵泡的大小、生长、发育情况,安排下次监测时间,正常的卵泡大小为18-25mm,这时才有可能发生排卵,安排同房怀孕的可能性较大。 由于卵巢排卵不是特别固定,女性要生活规律,保证充足的睡眠,不熬夜,釆取健康的生活方式,保持心情舒畅。另外,也可以根据自己的月经周期,计算排卵期,在排卵期使用排卵试纸,检查排卵情况,使用排卵试纸有一定误差,做超声监测排卵没有任何创伤,只需将膀胱的尿液排空就可以,是常用的监测排卵方法,更方便、准确。
我觉得用萝卜试纸来测排卵要靠谱一点,预测女性排卵期比较准,平时携带也很方便,他还可以检测多囊卵巢综合征等排卵性障碍问题。
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