[The pharmacokinetics of isoniazid in children (author's transl)]. 1981

C Advenier, and A Saint-Aubin, and P Scheinmann, and J Paupe

The purpose of this study, which involved 134 children aged between 0.5 and 17 years, was to investigate the metabolism of isoniazid (INH) in children and to provide guide-lines for dosage. The distribution of slow (55,5%) and fast (44,5%) acetylators was the same in children as in adults. However, the mean of INH inactivation index were lower (0.23 and 0.48) while distribution volumes, (1.30 +/- 0.06 and 1.57 +/- 0.17 1/kg) and total plasma clearances (5.39 +/- 0.43 and 14.7 +/- 1.5 ml/Kg/min) were higher than in adults. Plasma half-lives were similar in children and adults. These results indicate that INH is more rapidly metabolized in children owing, it is suggested to a higher liver weight : body weight ratio and to a more pronounced first pass effect. The doses of INH therefore must be higher in children and strictly adapted to each individual.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D007538 Isoniazid Antibacterial agent used primarily as a tuberculostatic. It remains the treatment of choice for tuberculosis. Isonicotinic Acid Hydrazide,Ftivazide,Isonex,Isonicotinic Acid Vanillylidenehydrazide,Phthivazid,Phthivazide,Tubazide,Acid Vanillylidenehydrazide, Isonicotinic,Hydrazide, Isonicotinic Acid,Vanillylidenehydrazide, Isonicotinic Acid
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008297 Male Males
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D002675 Child, Preschool A child between the ages of 2 and 5. Children, Preschool,Preschool Child,Preschool Children
D004334 Drug Administration Schedule Time schedule for administration of a drug in order to achieve optimum effectiveness and convenience. Administration Schedule, Drug,Administration Schedules, Drug,Drug Administration Schedules,Schedule, Drug Administration,Schedules, Drug Administration
D005260 Female Females
D006207 Half-Life The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacologic, physiologic, or radiologic activity. Halflife,Half Life,Half-Lifes,Halflifes
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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