單項選擇題患兒男,2歲,因“外傷后右肘關(guān)節(jié)腫脹3d”來診。既往偶有皮下淤斑史,無明確血友病家族史。查體:皮膚無出血點;右肘關(guān)節(jié)明顯腫脹,局部皮膚無淤斑;肝、脾不大。實驗室檢查:Hb105g/L,RBC3.4×10/L,WBC6.0×10/L,PLT130×10/L;APTT延長,PT正常。不適當(dāng)?shù)脑\斷措施是()

A.凝血四項檢查
B.簡易凝血活酶生成糾正試驗
C.血漿FⅧ:C/血漿FⅨ:C檢測
D.血漿vWF:Ag檢測
E.骨髓穿刺做細(xì)胞涂片檢查


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5.單項選擇題患兒男,10個月,單純母乳喂養(yǎng),1個月前反復(fù)腹瀉。查體:皮膚、黏膜輕度蒼白;肝肋下1cm,脾肋下1cm。血常規(guī):Hb80g/L,RBC3.2×10/L,WBC5.0×10/L,PLT121×10/L?;純和庵苎螒B(tài)學(xué)檢查結(jié)果應(yīng)該是()

A.MCV(fl)80~94,MCH(pg)28~32,MCHC(g/L)320~380
B.MCV(fl)80~98,MCH(pg)28~36,MCHC(g/L)320~400
C.MCV(fl)>94,MCH(pg)>32,MCHC(g/L)320~360
D.MCV(fl)<80,MCH(pg)<28,MCHC(g/L)320~360
E.MCV(fl)<80,MCH(pg)<28,MCHC(g/L)<320