Metolazone and Furosemide Therapy for Edema
1 Pediatric Department, University of Florida, Gainesville, FL 32601
To the Editor.
In his report, Dr Arnold1 concludes that the combination of furosemide and metolazone offers a useful and effective oral therapy in most children with edema resistant to furosemide. In our opinion, pitfalls in patient selection and methodology cast doubts on his conclusions.
Dr Arnold defines furosemide resistance as no clinical response after a dose of 2 to 4 mg/kg/d of furosemide. However, the inclusion of patients who did not respond to 2 mg/kg/d seems inappropriate because: (1) 2 mg/kg/d has been considered the initial dose to treat these types of patients2 and (2) some of these patients may have responded to higher doses of furosemide (3 or 4mg/kg/d).




