title: [Influence of gestational age and postnatal kidney maturation on the kinetics of gentamicin].
abstract: The current schedule for gentamicin administration to newborn infants, in doses of 2.5 mg/kg every twelve hours during the first week of life was evaluated in pre-term newborns under 35 weeks of gestational age (GA). Pharmacokinetic studies in steady state conditions were performed at the third and seventh days of therapy (periods A and B respectively) in nine pre-term (GA 30 to 34 weeks) and ten full-term newborns. Minimal gentamicin blood concentrations at period A were 1.96 +/- 0.32 micrograms/ml in term newborns and 2.51 +/- 0.48 micrograms/ml in pre-term infants (p less than 0.005) and, at period B, 1.49 +/- 0.37 micrograms/ml and 2.33 +/- 0.34 respectively (p less than 0.001). Gentamicin excretion showed good correlations with gestational age (r: 0.654; p less than 0.005) and creatinine clearance (r: 0.628; p less than 0.005).
authors: Instituto de Pediatría, Facultad de Medicina, Universidad Austral de Chile.
authors: F
authors: F
authors: Olavarría
authors: H
authors: H
authors: Dölz
authors: S
authors: S
authors: Krause
authors: F
authors: F
authors: Herrmann
authors: M
authors: M
authors: Broussain
authors: A
authors: A
authors: Ide
authors: T
authors: T
authors: Torres
mesh_terms: D003404:Creatinine / Q000378:metabolism; D005260:Female; D005839:Gentamicins / Q000008:administration & dosage / Q000493:pharmacokinetics*; D005865:Gestational Age; D005919:Glomerular Filtration Rate; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007668:Kidney / Q000378:metabolism / Q000502:physiology*; D008297:Male
chemical_list: D005839:Gentamicins; D003404:Creatinine
vernacular_title: Influencia de la edad gestacional y maduración renal postnatal en la cinética de gentamicina.