[The relationship of the theophylline concentration in the saliva and the blood serum in patients with a broncho-obstructive syndrome].

Theophylline salivary and serum concentrations (Tser and Tsal) were quantified after a single dose administration of theophylline drugs: euphylline (2.4% solution, 10 ml i.v. jet and 0.15 orally), theo-dur, retaphil, theopek, theobilong (0.3 g orally). The drugs were given to patients with broncho-obstructive syndrome. The samples were obtained within 6 and 24 hours upon administration for euphylline and other drugs, respectively. Tser and Tsal were determined at high-performance liquid chromatography. The authors revealed a linear relationship between Tser and Tsal in different time intervals. The percentage factors and formulas of Tser calculation by its Tsal values have been estimated.