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【单选题】
某患儿,男,8岁,因尿少、浮肿3天入院。3天前发现两眼睑及面部肿胀,后波及阴囊及全身,尿量减少,每日2~3次,每次50ml。半月前,患儿曾有咽喉肿痛病史。查体示体温37.2°C,脉搏90次/分,血压20.8/13.3kPa。发育营养一般,神志清,面色较白,眼睑肿胀,扁桃体肿大II度,肝、脾未触及。化验示尿量少,深黄,蛋白(+++),红细胞(++),颗粒(+),透明(+)。血RBC3.5×1012/L,Hb85g/L,白细胞6×109/L,中性粒细胞60%,淋巴细胞32%,血沉20mm/h,抗“O”1:625(正常1:500)。入院后经低盐、抗感染、降血压等治疗,住院45天,浮肿消退,血压恢复正常,尿中红细胞、消失,蛋白微量,出院。本例浮肿发生的原因主要: ( )A.
血浆蛋白降低
B.
面部淤血
C.
血管通透性增高
D.
钠水潴留
E.
饮水过多
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