驗孕試紙判讀專區 - 婦產科
By Hazel
at 2021-01-02T20:14
at 2021-01-02T20:14
Table of Contents
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欲請板友協助判讀驗孕試紙者,請在本篇推文貼圖。
請注意:板友們不對判讀結果擔負責任,若有任何疑慮請請教專業醫師~
----------
‧ 懷孕檢測原理
婦女若懷孕,體內成長中的胎盤會分泌醣蛋白賀爾蒙
(人類絨毛膜促性腺激素 Human Chorionic Gonadotropin,簡稱為HCG),
HCG 值可以由血清和尿液中測得。
‧ 如何知道是否懷孕?
1.到婦幼診所或醫院進行抽血檢驗
2.使用驗孕試紙
3.腹部或陰道超音波
‧ 何時進行驗孕最洽當?
一般婦女約是在月經週期的第14天左右排卵,
若此卵受精成功,要產生HCG最快需要6、7天,
而HCG真正開始大量分泌是在孕卵著床後(約11天)。
故最快有可能在行房後一週驗出,
但此時影響驗孕結果的因素很多(晚排卵、相關藥物... 等),因此不建議偷跑驗孕;
待預定來經的第一天發覺月經沒有開始時,較有可能驗出高濃度的HCG值。
‧ 使用驗孕試紙時一定要用晨尿(早上第一次排尿的尿液)嗎?
早上第一次的尿液通常含有最多人絨毛膜促性腺激素,可以驗得較清楚;
但在一天內任何時間的尿液都含有HCG,隨時可進行試紙檢驗。
‧ 如果驗孕試紙出現的線條很淡?
排除驗孕試紙壞掉的因素後,
只要有線出現,無論多淡,都代表尿液中已有HCG值、已懷孕。
可在隔日換新的驗孕試紙、使用晨尿再驗一次,或是每天都持續驗孕,
若線條有漸漸加深,表示HCG值濃度愈來愈高,確認懷孕。
但使用驗孕試紙驗出兩條線,僅能表示體內已有卵受精,並不等於安全著床,
仍有可能是卵巢囊腫、子宮外孕或葡萄胎等情形,
故還是得經由超音波確認著床位置。
‧ 驗到兩條線後,要什麼時候去看醫生?
待驗孕試紙的兩條線都一樣深時,才比較容易在超音波中照得到,
這時一般是 5~6週左右,
但仍有許多直到 8~9週才照到的例子。
‧ 還有什麼因素會影響測試結果?
含有人絨毛膜促性激素(例如pregnyl,profasi,pergonal,apl)的藥物
也可能產生錯誤的陽性結果。
-----
婦產科醫師 MrWilliams 幾點常見被問問題小小補充:
基本上要著床才能夠從媽媽的血液或尿液中驗到hCG
而著床被認為是發生在排卵後6-12天
值得注意的是有少數女性月經週期較短 研究指出 最短的排卵日約為D8
因此 週期短的D8排卵 也可能再6天後就著床
所以最短的可能驗孕陽性約D14天
但這是極少數週期短的人才可能
原則上至少應懷孕第三週再驗比較有臨床意義
另外 補充超音波診斷週數:
陰道超音波最早4.5-5週可看見胚囊,5.5-6週可看見心跳 這是最早最早的時間點
常遇到有女性懷孕三週驗到就來希望照超音波 就學理上是看不到的
而腹部超音波因脂肪、腸道空氣等阻隔所需的診斷時間通常約晚陰道超音波1-2週
原則上7週可見心跳
-----
--
欲請板友協助判讀驗孕試紙者,請在本篇推文貼圖。
請注意:板友們不對判讀結果擔負責任,若有任何疑慮請請教專業醫師~
----------
‧ 懷孕檢測原理
婦女若懷孕,體內成長中的胎盤會分泌醣蛋白賀爾蒙
(人類絨毛膜促性腺激素 Human Chorionic Gonadotropin,簡稱為HCG),
HCG 值可以由血清和尿液中測得。
‧ 如何知道是否懷孕?
1.到婦幼診所或醫院進行抽血檢驗
2.使用驗孕試紙
3.腹部或陰道超音波
‧ 何時進行驗孕最洽當?
一般婦女約是在月經週期的第14天左右排卵,
若此卵受精成功,要產生HCG最快需要6、7天,
而HCG真正開始大量分泌是在孕卵著床後(約11天)。
故最快有可能在行房後一週驗出,
但此時影響驗孕結果的因素很多(晚排卵、相關藥物... 等),因此不建議偷跑驗孕;
待預定來經的第一天發覺月經沒有開始時,較有可能驗出高濃度的HCG值。
‧ 使用驗孕試紙時一定要用晨尿(早上第一次排尿的尿液)嗎?
早上第一次的尿液通常含有最多人絨毛膜促性腺激素,可以驗得較清楚;
但在一天內任何時間的尿液都含有HCG,隨時可進行試紙檢驗。
‧ 如果驗孕試紙出現的線條很淡?
排除驗孕試紙壞掉的因素後,
只要有線出現,無論多淡,都代表尿液中已有HCG值、已懷孕。
可在隔日換新的驗孕試紙、使用晨尿再驗一次,或是每天都持續驗孕,
若線條有漸漸加深,表示HCG值濃度愈來愈高,確認懷孕。
但使用驗孕試紙驗出兩條線,僅能表示體內已有卵受精,並不等於安全著床,
仍有可能是卵巢囊腫、子宮外孕或葡萄胎等情形,
故還是得經由超音波確認著床位置。
‧ 驗到兩條線後,要什麼時候去看醫生?
待驗孕試紙的兩條線都一樣深時,才比較容易在超音波中照得到,
這時一般是 5~6週左右,
但仍有許多直到 8~9週才照到的例子。
‧ 還有什麼因素會影響測試結果?
含有人絨毛膜促性激素(例如pregnyl,profasi,pergonal,apl)的藥物
也可能產生錯誤的陽性結果。
-----
婦產科醫師 MrWilliams 幾點常見被問問題小小補充:
基本上要著床才能夠從媽媽的血液或尿液中驗到hCG
而著床被認為是發生在排卵後6-12天
值得注意的是有少數女性月經週期較短 研究指出 最短的排卵日約為D8
因此 週期短的D8排卵 也可能再6天後就著床
所以最短的可能驗孕陽性約D14天
但這是極少數週期短的人才可能
原則上至少應懷孕第三週再驗比較有臨床意義
另外 補充超音波診斷週數:
陰道超音波最早4.5-5週可看見胚囊,5.5-6週可看見心跳 這是最早最早的時間點
常遇到有女性懷孕三週驗到就來希望照超音波 就學理上是看不到的
而腹部超音波因脂肪、腸道空氣等阻隔所需的診斷時間通常約晚陰道超音波1-2週
原則上7週可見心跳
-----
--
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