To the Editor: People with renal failure must reduce their dietarypotassium intake. It is important to recognize that a watersoftener may be an important source of dietary potassium.
A 78-year-old man with diabetes and hypertension was referredbecause of acute renal failure (serum creatinine, 3.2 mg perdeciliter) and hyperkalemia (potassium, 6.3 mmol per liter)due to obstructive uropathy. His medications included 40 mgof furosemide (Lasix) twice daily, 20 mg of lisinopril (Prinivil)twice daily, and 250 mg of chlorpropamide (Diabinese) per day.A Foley catheter was placed, the lisinopril was discontinued,and three doses of sodium . . . [Full Text of this Article]
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