Linked Life Data

12928584

Source:http://linkedlifedata.com/resource/pubmed/id/12928584

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2003-8-20
pubmed:abstractText
We studied the effect of the inspired isoflurane concentration (C(I)iso) on the pharmacokinetics of isoflurane uptake in the brain by comparing the isoflurane concentration in internal jugular-bulb blood (Jiso) with that in arterial blood (Aiso), and analyzed this by gas chromatography. Sixteen patients (aged 43-76 years) undergoing colorectal surgery were enrolled, and anesthesia was maintained with a constant C(I)iso of either 1% (group 1, n = 8) or 2% (group 2, n = 8) during the 1st hour of isoflurane anesthesia. Under constant volume-controlled ventilation, we measured the C(I)iso and the end-tidal isoflurane concentration (C(E)iso) at the mouthpiece by infrared analysis. Our results demonstrate that it takes 40 min for the brain tissue concentration to equal Aiso for 1% C(I)iso, and 50 min for 2% C(I)iso. The Aiso (and/or Jiso) for 2% C(I)iso was approximately double when compared to that for 1% C(I)iso. Except during the initial wash-in period of the functional residual capacity in the first 3 min, the differences between C(I)iso and C(E)iso revealed that the body uptake of isoflurane for 2% C(I)iso was twice that for 1% C(I)iso. These results demonstrate that the pharmacokinetics of isoflurane uptake in the brain is time-dependent for Jiso to equal Aiso, and the midpoint between Aiso and Jiso (likely representing the isoflurane concentration in brain tissue) was dependent on C(I)iso.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0031-7012
pubmed:author
pubmed:copyrightInfo
Copyright 2003 S. Karger AG, Basel
pubmed:issnType
Print
pubmed:volume
69
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
102-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Pharmacokinetics of isoflurane: uptake in the brain.
pubmed:affiliation
Department of Anesthesiology, Tri-Service General Hospital, National Defense Medical Center, No. 161, Section 6 Minchuan E. Road, Taipei, Taiwan.
pubmed:publicationType
Journal Article, Clinical Trial, Controlled Clinical Trial, Research Support, Non-U.S. Gov't