03、检查明确胎儿数目B超检查能够及时发现是那重否是双胎或多胎妊娠。如果发现孕妈是早孕多胎妊娠，还要判断绒毛膜性，检查因为绒毛膜性的那重判断对于双胎监测及预后评估非常重要。
04、早孕了解胎儿发育情况早孕检查可以检查胚胎的检查发育情况，包括孕囊的那重大小、位置、是否有胎心等。
05、发现不良妊娠能够及早发现如胎停宫内、宫外孕、葡萄胎等不良妊娠病例，有助于及时进行相关处理。
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