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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1984-9-25
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pubmed:abstractText |
Plasma concentrations of propranolol (PROP) and its active 4-hydroxymetabolite were determined in neurological patients receiving chronic therapy with relatively low PROP doses (40-240 mg/day). Plasma PROP concentrations determined before the morning dose were much lower than, but significantly correlated (r = 0.91) with the drug level two hours after dosing. 4-hydroxypropranolol (4-OH-P) was often undetectable (less than 1 ng/ml) in the early morning samples. Plasma concentrations of both parent drug and metabolite determined two hours after the morning dose correlated weakly with the prescribed daily dose. The intrapatient dose-concentration relationship, on the other hand, was strong, particularly for the parent drug. The ratio between 4-OH-P and PROP in plasma was inversely related to the PROP concentration, at least over the lower PROP concentration range (0-100 ng/ml). The usefulness of determining the concentration of the metabolite in the evaluation of the pharmacological action of low doses of PROP is discussed.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:issn |
0251-1649
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
4
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
19-23
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pubmed:dateRevised |
2005-11-17
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pubmed:meshHeading |
pubmed-meshheading:6469429-Adolescent,
pubmed-meshheading:6469429-Adult,
pubmed-meshheading:6469429-Aged,
pubmed-meshheading:6469429-Dose-Response Relationship, Drug,
pubmed-meshheading:6469429-Female,
pubmed-meshheading:6469429-Humans,
pubmed-meshheading:6469429-Individuality,
pubmed-meshheading:6469429-Male,
pubmed-meshheading:6469429-Middle Aged,
pubmed-meshheading:6469429-Migraine Disorders,
pubmed-meshheading:6469429-Propranolol,
pubmed-meshheading:6469429-Tremor
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pubmed:year |
1984
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pubmed:articleTitle |
Plasma concentrations of propranolol and 4-hydroxy-propranolol at steady-state in neurological patients: intersubject and intrasubject correlations with dose.
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pubmed:publicationType |
Journal Article
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