女性,29岁,平时月经不规律,2~3个月一次,在停经42天查尿hCG阳性,现停经14周,宫底高度耻上3横指,多普勒未闻及胎心,此时最适宜进行的检查项目是( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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