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狼疮性肾炎如何分类

2019-10-25 阅读量:3173次
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肾病是系统性红斑狼疮常见的临床表现之一。部分病人在发病初期可能出现肾损害。病人可能观察到尿泡沫增多、眼睑浮肿,尿检可能出现蛋白阳性或镜下红细胞、管型等。若未及时进行规范诊疗,系统性红斑狼疮病人由于免疫复合物在肾小球基底膜沉积,在发病数年后发生肾损害的风险可能增加。狼疮肾病进展至后期可能出现肾功能指标异常。

根据相关病理分型标准,狼疮肾炎可分为6型:

I型:正常或微小病变。

Ⅱ型(系膜增殖型):肾小球的系膜细胞增殖,系膜增厚,临床常表现为少量蛋白尿和镜下血尿。

Ⅲ型(局灶增殖型):肾小球受累不超过50%。肾小球血管内皮细胞呈节段性增殖和局灶坏死,可伴有少量或中等量尿蛋白,血尿较少见。

Ⅳ型(弥漫增殖型):肾小球受累超过50%。肾小球基底膜不规则增殖,广泛坏死,可能伴有显著蛋白尿、管型尿及高血压。

V(膜型):可有系膜、基底膜增厚,但无细胞的增殖和坏死。常表现为大量尿蛋白,浮肿、高血压和胆固醇增高,血白蛋白减少。

Ⅵ型(硬化型):肾小球硬化,肾功能衰竭。

上述病理分型之间可能存在动态演变。若病变以增殖为主,经规范治疗后病情存在改善可能;若以硬化为主,则治疗难度可能相应增加。因此,及早进行规范诊疗对于管理病情具有重要意义。

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