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临床诊断早孕做药物流产前一般都要查尿HCG,但很少做B超检查,为什么尿妊娠试验阳性,妇检证实妊娠还要做B超再证实一下呢?原因有以下几点。 1.因药流适用于孕周小,胎囊胎芽小的妊娠,所以有必要做B超检查观察胎囊的大小,一般胎囊小于2.3cm直径做药物流产效果好,清宫率低。 2.尿妊娠试验虽然可确诊是否妊娠,但可能出现假阳性和假阴性(已流产或胎芽已死并被吸收者,尿HCG可继续阳性甚至长达三周)。我们曾遇1例尿妊娠试验阳性而做药流术,服药8天后仍未见阴道流血现象,经
Clinical diagnosis of early pregnancy Drug abortion before the general should check the urine HCG, but rarely do B-ultrasound, why the urine pregnancy test was positive, pregnancy confirmed pregnant but also to do B-and then verify it? The reasons are the following. 1. Due to medical abortion for small gestational weeks, embryo sac fetal small pregnancy, it is necessary to do B-ultrasound to observe the size of the fetal sac, fetal sac generally less than 2.3cm in diameter to do the medical abortion effect is good, the Qing rate is low. 2. Urine pregnancy test although pregnancy can be confirmed, but false positives and false negatives may occur (abortion or fetal buds have been dead and absorbed, urine HCG can continue to be positive for up to three weeks). We have encountered a case of urine pregnancy test positive and do medical flow, vaginal bleeding still not seen after 8 days of medication, the