Linked Life Data

7329425

Source:http://linkedlifedata.com/resource/pubmed/id/7329425

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
1982-4-22
pubmed:abstractText
In apneic premature infants treated with theophylline or caffeine the pharmacokinetics of the methylxanthines were investigated. Orally applied caffeine and theophylline were rapidly absorbed reaching peak plasma levels at 1-2 and 1-4 h resp. The plasma concentration of free theophylline was significantly higher (p less than 0.001) in prematures than in adults. In prematures and adults only 5 resp. 8% of caffeine were bound to the plasma proteins. The salivary methylxanthine concentration corresponds to the plasma concentration of the free drugs. The mean plasma half-live of theophylline was 22.3 h, the clearance 28.3 ml/kg/h and the volume of distribution 0.9 l/kg. For caffeine a plasma half-live of 70.6 h, a clearance of 8.6 ml/h/kg and a volume of distribution of 0.84 l/kg was found. A first oral dose of 7-9 mg/kg theophylline or caffeine should be administered to reach rapidly effective plasma concentrations of about 10 micrograms/ml. To maintain a mean plasma concentration of about 10 micrograms/ml, a daily oral maintenance dose of 5-9 mg/kg theophylline or 2 mg/kg caffeine should be given. High concentrations of unchanged caffeine and theophylline were excreted in the urine of premature infants indicating immaturity of the metabolizing hepatic enzymes. In prematures treated with theophylline caffeine was found in plasma as a metabolite of theophylline.
pubmed:language
ger
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0026-9298
pubmed:author
pubmed:issnType
Print
pubmed:volume
129
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
697-702
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1981
pubmed:articleTitle
[Pharmacokinetics of theophylline and caffeine in premature infants with apnea (author's transl)].
pubmed:publicationType
Journal Article, English Abstract