單項(xiàng)選擇題下列哪一項(xiàng)與營(yíng)養(yǎng)性巨幼細(xì)胞性貧血的發(fā)病機(jī)制無(wú)關(guān)()

A.DNA合成減少
B.紅細(xì)胞的分裂增殖時(shí)間延長(zhǎng)
C.紅細(xì)胞中血紅蛋白合成減少
D.紅細(xì)胞的胞體變大,形成巨幼紅細(xì)胞
E.巨幼紅細(xì)胞在骨髓內(nèi)易遭破壞


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1.單項(xiàng)選擇題最符合營(yíng)養(yǎng)性巨幼細(xì)胞貧血的化驗(yàn)結(jié)果是()

A.RBC4.0×1012/L,Hb75g/L,MCV63fl,MCH22pg,MCHC0.25,網(wǎng)織紅細(xì)胞0.01
B.RBC2.3×1012/L,Hb85g/L,MCV94fl,MCH35pg,MCHC0.35,網(wǎng)織紅細(xì)胞0.015
C.RBC2.0×1012/L,Hb60g/L,MCV84fl,MCH30pg,MCHC0.33,網(wǎng)織紅細(xì)胞0.005
D.RBC4.5×1012/L,Hb115g/L,MCV83fl,MCH31pg,MCHC0.34,網(wǎng)織紅細(xì)胞0.015
E.RBC2.2×1012/L,Hb63g/L,MCV81fl,MCH32pg,MCHC0.33,網(wǎng)織紅細(xì)胞0.009

2.單項(xiàng)選擇題不符合營(yíng)養(yǎng)性巨幼細(xì)胞貧血的是()

A.肝、脾輕度大
B.智力及動(dòng)作發(fā)育倒退
C.血涂片中紅細(xì)胞大小不等,中心淡染區(qū)明顯
D.骨髓各期幼紅細(xì)胞均出現(xiàn)巨幼變
E.可出現(xiàn)血小板降低

3.單項(xiàng)選擇題嚴(yán)重貧血患兒(血紅蛋白38g/L)發(fā)生呼吸道疾患,PaO240mmHg,以下哪一項(xiàng)癥狀是正確的()

A.不會(huì)發(fā)生心動(dòng)過速
B.不會(huì)發(fā)生發(fā)紺
C.不會(huì)發(fā)生貧血表現(xiàn)(面色蒼白等)
D.發(fā)生發(fā)紺
E.不會(huì)出現(xiàn)心臟雜音

4.單項(xiàng)選擇題最符合紅細(xì)胞G-6PD缺乏癥的化驗(yàn)結(jié)果是()

A.RBC4.0×1012/L,Hb75g/L,MCV63fl,MCH22pg,MCHC0.25,網(wǎng)織紅細(xì)胞0.01
B.RBC2.3×1012/L,Hb85g/L,MCV94fl,MCH35pg,MCHC0.35,網(wǎng)織紅細(xì)胞0.015
C.RBC2.0×1012/L,Hb60g/L,MCV84fl,MCH30pg,MCHC0.33,網(wǎng)織紅細(xì)胞0.005
D.RBC4.5×1012/L,Hb115g/L,MCV83fl,MCH31pg,MCHC0.34,網(wǎng)織紅細(xì)胞0.015
E.RBC2.2×1012/L,Hb63g/L,MCV81fl,MCH32pg,MCHC0.33,網(wǎng)織紅細(xì)胞0.009

5.單項(xiàng)選擇題患兒女,7歲,1個(gè)月來(lái)不規(guī)則發(fā)熱,面色逐漸蒼白,Hb80g/L,Coombs試驗(yàn)陽(yáng)性,可排除的診斷是()

A.自身免疫性溶血性貧血
B.霍奇金病
C.系統(tǒng)性紅斑狼瘡
D.再生障礙性貧血
E.藥物性溶血性貧血

6.單項(xiàng)選擇題重型B珠蛋白生成障礙性貧血()

A.Coomb試驗(yàn)陽(yáng)性
B.紅細(xì)胞滲透脆性試驗(yàn)陽(yáng)性
C.抗堿血紅蛋白含量增高
D.高鐵血紅蛋白還原試驗(yàn)異常
E.Ham試驗(yàn)陽(yáng)性

9.單項(xiàng)選擇題自身免疫性溶血性貧血()

A.Coomb試驗(yàn)陽(yáng)性
B.紅細(xì)胞滲透脆性試驗(yàn)陽(yáng)性
C.抗堿血紅蛋白含量增高
D.高鐵血紅蛋白還原試驗(yàn)異常
E.Ham試驗(yàn)陽(yáng)性

10.單項(xiàng)選擇題最符合再生障礙性貧血的化驗(yàn)結(jié)果是()

A.RBC4.0×1012/L,Hb75g/L,MCV63fl,MCH22pg,MCHC0.25,網(wǎng)織紅細(xì)胞0.01
B.RBC2.3×1012/L,Hb85g/L,MCV94fl,MCH35pg,MCHC0.35,網(wǎng)織紅細(xì)胞0.015
C.RBC2.0×1012/L,Hb60g/L,MCV84fl,MCH30pg,MCHC0.33,網(wǎng)織紅細(xì)胞0.005
D.RBC4.5×1012/L,Hb115g/L,MCV83fl,MCH31pg,MCHC0.34,網(wǎng)織紅細(xì)胞0.015
E.RBC2.2×1012/L,Hb63g/L,MCV81fl,MCH32pg,MCHC0.33,網(wǎng)織紅細(xì)胞0.009