肝硬变腹水患者低钠血症 (血清钠浓度 130 m mol/ L)的发生率约 30 % [1 ] 。肝硬变门脉高压患者水摄入与排出失衡 ,水分在体内蓄积 ,形成腹水和稀释性低钠血症。重度低钠血症可引起肝性脑病、脑水肿等严重并发症 ,造成持久性中枢神经系统损害 ,病死率极高 [2 ] 。另外 ,为了 The incidence of hyponatremia (serum sodium concentration 130 m mol / L) in cirrhotic ascites patients is about 30% [1]. Patients with cirrhosis and portal hypertension water intake and discharge imbalance, water accumulation in the body, the formation of ascites and dilutional hyponatremia. Severe hyponatremia can cause serious complications such as hepatic encephalopathy, cerebral edema, causing permanent damage to the central nervous system, high mortality [2]. In addition, in order to