Linked Life Data

2782090

Source:http://linkedlifedata.com/resource/pubmed/id/2782090

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1989-10-18
pubmed:abstractText
The left ventricular pressure, arterial blood pressure and heart rate were studied in three series of pentobarbital-anaesthetized rats exposed to 5-bar normoxic (PO2 = 0.2 bar) environments: nitrogen-oxygen (15 and 60 min) and helium-oxygen (15 min). The maximal left ventricular pressure (LVP max) and the maximal velocities of LVP rise (+ dP/dt max) and fall (- dP/dt) were significantly (P less than 0.01) increased immediately after reaching normoxic 5 bar (He, 13-28%; N2, 13-23%) and during the exposure at 5 bar (He, 22-44%; N2, 13-18%). The pulse pressure increased significantly (He, 50-62%; N2, 30-34%; P less than 0.01) during the hyperbaric exposure. No changes in heart rate or end-diastolic and mean arterial pressure were detected. The present findings indicate an enhanced cardiac contractility (+ dP/dt max) at 5 bar, with the greatest increase found when He was used as inert gas. The increased contractility was of significant duration (at least 60 min), and was not completely reversed until 5-10 min after decompression.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0001-6772
pubmed:author
pubmed:issnType
Print
pubmed:volume
136
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
167-76
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Increased cardiac contractility in rats exposed to 5 bar.
pubmed:affiliation
Department of Physiology, University of Bergen, Norway.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't