潴钾利尿剂的特点是抑制远端肾小管钠～钾交换,有潴钾作用,其利尿作用较弱,如使用不当,常可导致高血钾症。特别是对肾功能不良者,使用时更应注意。作者遇到一例报告如下: Potassium is characterized by potassium diuretic distal tubule sodium ~ potassium exchange, potassium retention effect, its diuretic effect is weak, such as improper use, can often lead to hyperkalemia. Especially for those with renal dysfunction, should pay more attention to use. The author encountered a case report as follows: