Linked Life Data

3964102

Source:http://linkedlifedata.com/resource/pubmed/id/3964102

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1986-4-29
pubmed:abstractText
Two categories of inflow and outflow valve closure sounds are present in the Jarvick-7 model of the Utah total artificial heart. A presystolic inflow valve closure sound occurs at the end of ventricular filling, resulting from a transient rise in intraventricular pressure above that in the atrium. A second inflow valve closure sound follows, associated with the onset of mechanical systole with a rapid rise in intraventricular pressure. A mid- to late systolic outflow valve closure sound occurs at the end of ventricular ejection, resulting from a transient fall in intraventricular pressure below that in the aorta. A second outflow valve closure sound follows, associated with the onset of mechanical diastole with a rapid fall in intraventricular pressure. Under operating conditions where either ventricular filling or ejection is not complete, the presystolic and midsystolic sounds are absent. Thus, regulated heart driver parameters as well as preload and afterload to the extent that they influence ventricular filling and emptying will determine the presence and sequence of valve sounds.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0160-564X
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
65-8
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1986
pubmed:articleTitle
Phonocardiographic evaluation of total artificial heart valve movement. Correlation with pressure waveforms.
pubmed:publicationType
Journal Article