Linked Life Data

9749261

Source:http://linkedlifedata.com/resource/pubmed/id/9749261

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1998-10-6
pubmed:abstractText
Pre-ejectional left ventricular wall motion has been demonstrated clinically by angiography. Intramyocardial wall velocities generated by cardiac contraction may be measured by Doppler tissue imaging. The aim of this study was to detect pre-ejectional wall motion and to analyse its sequencer. A long axis M Mode with simultaneous septal and posterior wall imaging was performed in 11 normal subjects (age 37 +/- 15 years) with velocity analysis between the electrocardiographic Q wave and the onset of ejection by digitised analysis between the electrocardiographic Q wave and the onset of ejection by digitised images with automatic velocity extraction (3.8 ms) along a horizontal subendocardial line. The total duration of the pre-ejectional periods in conventional and Doppler tissue imaging are compared. Oscillatory velocimetric appearances with alternate colours of adjacent bands in each wall and a mirror image between walls was observed. The mean and peak velocities of the first four bands were significantly different between the walls (p < 0.001) as were the absolute values between bands 2 (p < 0.02) and 3 (p < 0.006). The duration of band 2, related to motion mainly towards the center of the ventricular chamber exceeded that of the adjacent bands (septum p < 0.02, posterior wall p < 0.001). The correlation coefficient for total duration of the pre-ejectional period between Doppler tissue imaging and conventional Doppler was 0.83, p < 0.05 for the interventricular septum and 0.76, p < 0.04 for the posterior was. The authors conclude that regional pre-ejectional wall motion can be recorded. During isovolumic contraction, there is motion predominantly towards the center of the left ventricular chamber of the two walls, confirming previous angiographic findings. Its timing suggests that wall motion proceeds the increase in ventricular pressure.
pubmed:language
fre
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0003-9683
pubmed:author
pubmed:issnType
Print
pubmed:volume
91
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
29-38
pubmed:dateRevised
2009-2-13
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
[Doppler tissue imaging of pre-ejection left ventricular wall dynamics in normal subjects].
pubmed:affiliation
Service de cardiologie, Centre hospitalier universitaire de Bicêtre, Le Kremlin-Bicêtre.
pubmed:publicationType
Journal Article, Clinical Trial, English Abstract, Review