Linked Life Data

8477026

Source:http://linkedlifedata.com/resource/pubmed/id/8477026

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1993-5-24
pubmed:abstractText
Ventricular pressure-volume (PV) loops provide information about ventricular function. Methodologic constraints have limited derivation of PV loops to the laboratory. The present study addresses derivation of PV loops from a direct left ventricular pressure measurement and left ventricular volume derived from continuous cardiac output. The measurements were performed in vivo in intact, innervated, normal canine hearts. Data from a total of 5 dogs and 13 different cardiac work states were analyzed. A nonlinear oscillator, a van der Pol's oscillator, described the PV relationships. Comparison of left ventricular stroke work derived from the van der Pol's oscillator model with that obtained from ultrasound transducers sutured directly to the myocardium demonstrated a linear correlation, close to the identity line, with R2 = 0.90. Modelling of LV PV loops by this technique was similar to loops derived by experimental measurements. This technique could lead to increased clinical uses for PV relationships.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
1053-0770
pubmed:author
pubmed:issnType
Print
pubmed:volume
7
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
195-9
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Use of a modified van der Pol's oscillator to construct ventricular pressure-volume relations.
pubmed:affiliation
Department of Surgery, University of Minnesota, Minneapolis 55455.
pubmed:publicationType
Journal Article