急性肾炎引起血压增高的原因尚未阐明。过去曾设想,肾炎时因肾脏缺血后引起肾素产生过多,而使血压升高。但近来测定急性肾炎患者的血中肾素浓度,多在正常范围,因此,认为肾脏缺血和肾滤过率降低,造成钠与水的潴留,血容量增加以及血管痉挛,可能为引起高血压的因素。急性肾炎脑症状发生的机理,目前也不大明确。国内外许多临床工作者,都观察到急性肾炎的脑部症状常与高血压或小血管痉挛同时存在,相互间有着密切关系,故称之谓高血压脑病。急性肾炎高血压脑病都有不同程度的血压增高,但血压增高仅是一种现象,而不 The causes of acute nephritis caused by increased blood pressure have not been elucidated. In the past had envisaged, nephritis due to kidney ischemia caused by excessive renin production, leaving the blood pressure. However, recent determination of acute nephritis in patients with blood renin concentration, mostly in the normal range, therefore, that the renal ischemia and renal filtration rate decreased, resulting in retention of sodium and water, increased blood volume and vasospasm may be caused by high blood pressure the elements of. The mechanism of acute nephritis brain symptoms, is not clear at present. Many clinical workers at home and abroad, have observed acute nephritis brain symptoms often associated with hypertension or small vasospasm, there is a close relationship between each other, so called hypertensive encephalopathy. Acute nephritis hypertensive encephalopathy have varying degrees of increased blood pressure, but increased blood pressure is only a phenomenon, not