钠血症<48hР6122:? 慢性低钠血症≥48hР6123?如果不能对其分类,除非有临床或回顾性反证(表8),则应认为系慢性低钠血症Р为何以48小时为界限界定急慢性低钠血症?РThis usually occurs when hyponatraemia develops rapidly, and the brain has had too little time to adapt to its hypotonic environment.?Over time, the brain reduces the number of osmotically active particles within its cells (mostly potassium anic solutes) in an attempt to restore the brain volume (Fig. 2). This process takes 24–48 h, hence the reason for using the 48-h threshold to distinguish acute (<48 h) from chronic (≥48 h) hyponatraemiaР当低钠血症发生快速发生时,脑细胞几乎没有时间来适应低渗环境。Р大脑通过减少其细胞内渗透活性物质如钾和有机溶质以试图恢复脑容量。此过程需时24~48小时。因此,以48小时作为急性和慢性低钠血症的界限Р表8 与急性低钠血症相关的药物和病情Р术后阶段??前列腺癌的手术切除后,内镜下切除后??子宫手术??烦渴??运动??最近的噻嗪类药物处方??3,4-methylenedioxymethamfetamine(MDMA,XTC)??结肠镜检查的准备工作??环磷酰胺(IV)??催产素??最近开始去氨加压素治疗??最近开始特利加压素,加压素
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