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  • Title: Theophylline metabolism in patients with hepatosplenic mansoniasis and cirrhosis.
    Author: Cukier A, Strauss E, Terra Filho M, Santos SR, Vargas FS.
    Journal: J Hepatol; 1992 May; 15(1-2):35-9. PubMed ID: 1506654.
    Abstract:
    The pharmacokinetics of theophylline were studied in 12 patients with hepatosplenic mansoniasis, 14 patients with cirrhosis and 16 normal controls. Following a single intravenous dose of aminophylline volumes of distribution, serum half-lives and body clearances were determined. Volumes of distribution of theophylline in patients with schistosomiasis (mean 0.624 l/kg) did not differ from cirrhotic patients (mean 0.616 l/kg) or normal controls (mean 0.593 l/kg). Cirrhotic patients had a prolonged half-life compared to normal subjects (mean 22.1 vs. 9.9 h), while patients with schistosomiasis did not substantially differ from normal controls (15.8 vs. 9.9 h). Body clearance in patients with schistosomiasis was similar to controls (34.02 vs. 49.20 ml/h per kg) but decreased (29.24 ml/h per kg) in patients with cirrhosis. Individual analysis of the group with schistosomiasis disclosed three patients with reduced theophylline elimination. No relationship was found between laboratory tests of liver function and the pharmacokinetics of theophylline in any group. The administration of theophylline to patients with hepatosplenic schistosomiasis, although less dangerous than in cirrhosis, must be closely followed.
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