Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1994-11-22
pubmed:abstractText
Left ventricular ejection force as been purpose as a new Doppler ejection phase index, to assess left ventricular performance. In order to evaluate its usefulness, 33 patients undergoing cardiac catheterization were prospectively study. We considered three groups based on angiographic ejection fraction: group A-- > or = 55% (11 patients), group B--35 to 55% (10 patients), and group C-- < or = 35% (10 patients). All patients were in sinus rhythm and mitral regurgitation > I/IV or aortic valve disease were exclusion criterion. The following parameters, derived from Pulsed Doppler aortic velocities curves, were analyzed: peak velocity (cm/s), acceleration time (s), velocity time integral over the acceleration time (VTI Ac-cm), mean acceleration (cm/s2) and ejection force (g.cm/s2). Ejection force as calculated using the mass-acceleration concept, ad: ejection force = mean acceleration x VTI Ac x CsA x 1.06 (CsA - 2D cross sectional area of the aortic annulus; 1.06 - mass density of blood, g/cm3). [table: see text] CONCLUSIONS: The present study confirms that Doppler echocardiography can be used for the assessment of left ventricular performance based on noninvasive measurements and that Doppler derived ejection force is an accurate index for this purpose. However, ejection force evaluation, taking in account the results obtained for mean acceleration, a much less time consuming Doppler derived parameter, appears not to show any clinical advantage.
pubmed:language
por
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0870-2551
pubmed:author
pubmed:issnType
Print
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
405-15, 380
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
[Non-invasive evaluation of ventricular ejection force by Doppler echocardiography].
pubmed:affiliation
Serviço de Cardiologia, Hospital de Santa Marta, Lisboa.
pubmed:publicationType
Journal Article, Clinical Trial, English Abstract