Linked Life Data

6839632

Source:http://linkedlifedata.com/resource/pubmed/id/6839632

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1983-6-10
pubmed:abstractText
The effects of thyrotoxicosis on Liver blood flow and propranolol disposition were followed in five patients while thyrotoxic and when euthyroid. Propranolol was taken orally to achieve steady state and then radiolabeled drug was given simultaneously by intravenous injection. Thyrotoxicosis was associated with doubling of both oral and systemic clearances of unbound propranolol, which resulted in an approximately 50% reduction in blood concentrations after oral doses. These changes were attributable to increases in hepatic blood flow and drug-metabolizing activity of the liver. The propranolol elimination t 1/2 was not affected by thyrotoxicosis since the enhanced clearance was offset by a change in volume of distribution. These findings may explain the reduction of plasma propranolol concentration and many of the therapeutic failures reported in the treatment of thyrotoxicosis. The dose required to achieve therapeutic blood concentrations of propranolol in thyrotoxic patients is variable and will usually be substantially larger than that required for euthyroid patients.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0009-9236
pubmed:author
pubmed:issnType
Print
pubmed:volume
33
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
603-8
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1983
pubmed:articleTitle
Effect of thyrotoxicosis on liver blood flow and propranolol disposition after long-term dosing.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't