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多胎妊娠虽非病态但实属高危妊娠范畴,早期检出多胎妊娠至关重要,以便早作防治减少并发症改善预后。超声可早在孕7周前后准确的检出多胎妊娠并可判断胎儿发育情况及胎儿异常,有重要临床意义。 1 多胎妊娠的声像图在孕7周应用超声即可探测出多胎妊娠,表现为子宫增大,宫腔内可具两个或三个以上胎囊,几个胎囊紧靠,但其间有明显的间隔。如果各自胎囊中均见有胎芽和原始心管博动则诊断可以成立。我院曾于1990至1992年间应用B超诊断了132例多胎妊娠,其中最早的两例分别为孕7周双胎及孕8周三胎。多胎妊娠至中晚期表现为:子宫明显增大,大于孕周,常并发羊水过多或较多。我院132例中有8例羊水过多(>8cm)。孕中期因羊水较多,常将两胎囊之间隔
Although non-morbid but non-morbid but high-risk areas of pregnancy, early detection of multiple pregnancies is essential for early prevention and treatment to reduce complications and improve prognosis. Ultrasound as early as 7 weeks before and after pregnancy, accurate detection of multiple pregnancies and can determine fetal development and fetal abnormalities, has important clinical significance. 1 multiple pregnancy gestational ultrasound in the first 7 weeks of pregnancy can detect multiple pregnancies with ultrasound, the uterus increased, intrauterine may have two or more than three fetal sac, several fetal sac close, but in between Clear interval. If the fetal sac are seen in their respective fetal and primitive cardiac catheterization diagnosis can be established. In our hospital from 1990 to 1992 the application of B-ultrasound diagnosed 132 cases of multiple pregnancies, of which the earliest two cases were pregnant 7 weeks of twins and pregnant 8 weeks of third births. Multiple pregnancies to the late manifestations: significantly increased uterine, greater than gestational age, often complicated by excessive or more amniotic fluid. 132 cases in our hospital, 8 cases of polyhydramnios (> 8cm). Second trimester due to amniotic fluid, often between the two fetal sac interval