title: [The comparative pharmacokinetics of ceftriaxone in the blood and bronchial secretion in patients with different durations in the course of chronic bronchitis].
abstract: The study on ceftriaxone penetration into bronchial secretion showed that in patients with a short-term history of chronic bronchitis (no more than 3 years) ceftriaxone used in a dose of 1 g once a day intramuscularly was detectable in the bronchial secretion within 10 hours after the administration, its concentrations being 0.67-2.41 micrograms/ml in 3 hours, 15.87 micrograms/ml in 4.5 hours, 4.58 micrograms/ml in 6.5 hours and 2.29 micrograms/ml in 10 hours. In patients with a long-term history of chronic bronchitis (mean 10 to 20 years) the presence of ceftriaxone in the bronchial secretion was detectable in a concentration of 0.51-3.75 micrograms/ml only in 2 hours after its administration. Beginning from the 5th hour after the administration its detection failed. This is indicative of lower ceftriaxone penetration into the bronchial secretion of such patients. The duration of chronic bronchitis did not influence ceftriaxone pharmacokinetics in blood. The contents of the antibiotic in serum and bronchial secretion were determined by HPLC (the resolving power of 0.5 micrograms/ml).
authors.forename: Iu V
authors.initials: IuV
authors.lastname: Kamnev
authors.forename: K K
authors.initials: KK
authors.lastname: Manuĭlov
authors.forename: V A
authors.initials: VA
authors.lastname: Orlov
mesh_terms: D001980:Bronchi / Q000378:metabolism*; D001991:Bronchitis / Q000188:drug therapy / Q000378:metabolism*; D002443:Ceftriaxone / Q000032:analysis / Q000493:pharmacokinetics*; D002851:Chromatography, High Pressure Liquid; D002908:Chronic Disease; D006801:Humans; D008875:Middle Aged; D013997:Time Factors
chemical_list: D002443:Ceftriaxone
vernacular_title: Sravnitelnaia farmakokinetika tseftriaksona v krovi i bronkhial'nom sekrete u bol'nykh s razlichnoĭ dlitel'nost'iu techeniia khronicheskogo bronkhita.