serum , lymphocyte and erythrocyte potassium , magnesium and calcium concentrations were measured in 31 patients with congestive cardiac failure and 14 patients with mild noncomplicated hypertension , who had been receiving either furosemide or chlorothiazide ( with or without potassium supplementation ) or a combination of hydrochlorothiazide and amiloride for more than 6 months .
C0018802
congestive cardiac failure
C0008273
chlorothiazide