Evaluation of left ventricular diastolic function in canine acute myocardial ischemia using velocity vector imaging and quantitative tissue velocity imaging / 南方医科大学学报
Journal of Southern Medical University
; (12): 1333-1336, 2009.
Article
in Zh
| WPRIM
| ID: wpr-268767
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To assess the value of velocity vector imaging (VVI) and quantitative tissue velocity imaging (QTVI) in assessing left ventricular diastolic function of the dogs with acute myocardial ischemia.</p><p><b>METHODS</b>Six healthy mongrel dogs were subjected to ligation of the left circumflex artery or left anterior descending artery to induce coronary artery stenosis of varying degrees. The mean peak diastolic velocity (Em) of the ventricular walls around the mitral annulus was recorded with VVI or QTVI in the coronary blood flow. The left ventricular end diastolic pressure (LVEDP) was measured with pigtail catheter in the left ventricle.</p><p><b>RESULTS</b>As the coronary blood flow decreased, LVEDP was gradually increased, and Em measured by VVI or QTVI were also gradually decreased. A good linear correlation was shown between Em measured by VVI or QTVI and LVEDP (r=-0.834, P<0.001, and r=-0.68, P<0.001, respectively). A significant difference was observed in the correlation coefficient between VVI and QTVI (Z=2.625, P=0.0087).</p><p><b>CONCLUSION</b>VVI and QTVI both provide good noninvasive means for measuring left ventricular diastolic function. VVI, a new echocardiographic modality without angular dependence, is better than QTVI in evaluating left ventricular diastolic function.</p>
Full text:
1
Database:
WPRIM
Main subject:
Diagnostic Imaging
/
Echocardiography
/
Ventricular Function, Left
/
Myocardial Ischemia
/
Disease Models, Animal
/
Methods
Type of study:
Diagnostic_studies
Limits:
Animals
Language:
Zh
Journal:
Journal of Southern Medical University
Year:
2009
Document type:
Article