血小板减少是妊娠期较常见的合并症,约占妊娠总数的3.7%〔1〕,在妊娠末期的发生率约为6%~15%〔2〕。一般认为血小板减少是指血小板计数低于100×109/L。按血小板计数降低程度分类,≤50×109/L称为重度,(50~100)×109/L称为轻度。血小板计数和功能的降低,可引起严重的出血、贫血 Thrombocytopenia is a more common complication during pregnancy, accounting for 3.7% of the total number of pregnancies 〔1〕, the incidence of late pregnancy is about 6% to 15% 〔2〕. Is generally believed that thrombocytopenia is less than 100 × 109 / L platelet count. According to the degree of reduction of platelet count classification, ≤ 50 × 109 / L is called severe, (50 ~ 100) × 109 / L is called mild. Reduced platelet count and function can cause severe bleeding and anemia