salt retention

例句：

1. 1. The patient's blood pressure needs to be monitored closely during the treatment period.
   治疗期间需要密切监测患者的血压。
2. 2. The doctor advised her to increase her salt intake to prevent hypertension.
   医生建议她增加盐的摄入量，以防止高血压。
3. 3. Salt retention is a common problem in patients with chronic kidney disease.
   慢性肾病患者中，盐保留是一个常见的问题。