Copyright © 1989 by the European Society of Cardiology.
© 1989 The European Society of Cardiology
Digitoxin in patients with hepatorenal insufficiency after repeated oral administration

*Medical Hospital, Christian-Albrechts-University Kiel West Germany
Division of Clinical Pharmacology and Toxicology Ulleval Hospital Oslo Norway
Received 12 May 1988; revised 2 September 1988; .
Address for correspondence Professor Dr W. Kirch, I Medizinische Klinik, Christian-Albrechts-Universit
t, Schittenhelmstrasse 12, D-2300 Kiel, 1, FRG.
Abstract
Following chronic oral administration of digitoxin 01 mg day-1 the pharmacokinetics ofthis glycoside were studied in seven patients with hepatorenal insufficiency and were compared with those of seven healthy volunteers. Liver cirrhosis of the patients was confirmed by liver biopsy. Mean creatinine clearance of the healthy subjects was 129.7 ± 3.3 ml min-1 (X ± SEM), that of the patients was 25.6 ± 20.4 ml min-1. Mean antipyrine clearance (parameter of oxidative liver function) was 49.7 ± 6.0 ml min-1 in the volunteers and 22.0 ± 2.9 ml min-1 in the patients. Plasma protein binding of digitoxin (PPB) was95.0 ± 1.1% in the patients and 96.7 ± 0.6% in the healthy subjects (n.s.). Total body clearance of digitoxin (Cltos) was 00728 ± 00120 ml min-1 kg-1 in the patients and 0.0615 ± 0.0027 ml min-1 kg-1 in normals (n.s.)). Mean steady state plasma levels (Css) of the patients were 18.3 ± 4.7 ng ml-1and 15.8 ± l.3 ng ml-1 in the normals (n.s.). Our data obtained from chronic oral administration do not indicate a reduced total body clearance of digitoxin in patients with hepatorenal insufficiency
Key Words: Digitoxin chronic oral administration hepatorenal insufficiency