Copyright © 1984 by the European Society of Cardiology.
© 1984 The European Society of Cardiology
Effects of cardiac failure on the pharmacokinetics of the diuretic tizolemide
Department of Medicine, S:t Erik's Hospital S-112 82 Stockholm, Sweden
Received 20 May 1983; revised 30 October 1983; .
1Address for correspondence: B. Beermann, MD, Department of Medicine, S:t Erik's Hospital. S-l 12 82 Stockholm, Sweden.
Abstract
Tizolemide, an alkaline sulphonamide diuretic, was given i.v. in one dose and orally during one week to eight patients with compensated cardiac failure. They had essentially normal glomerular filtration rate but reduced renal plasma flow.
Tizolemide was almost completely absorbed from the gastrointestinal tract. The drug was mainly eliminated via tubular secretion. Renal clearance of the drug was much lower than in healthy subjects because of low renal plasma flow. As a consequence plasma halflife was prolonged considerably in some patients.
It was concluded that drugs with mainly tubular renal elimination may have a reduced elimination rate in patients with cardiac diseases despite normal glomerular filtration rate.
Key Words: Cardiac failure diuretics renal clearance tubular secretion