%0 Journal Article
%T The Use of Left Ventricular Myocardial Stiffness Index as a Predictor of Myocardial Performance in Patients with Systemic Hypertension
%A Muataz F. Hussein
%A Asia H. Al-Mashhadani
%A Samar I. Essa
%J International Journal of Medical Physics,Clinical Engineering and Radiation Oncology
%P 167-175
%@ 2168-5444
%D 2014
%I Scientific Research Publishing
%R 10.4236/ijmpcero.2014.33022
%X <p>
	<span style=\"font-family:Verdana;\">Our
aim was to investigate the changes in the myocardium stiffness index for
patients suffering from systemic hypertension, and to assess their left
ventricular performance. We studied 263 hypertensive patients and 166 healthy
subjects as a control group. By using conventional Doppler echocardiography</span><span style=\"font-family:Verdana;\">, </span><span style=\"font-family:;\" \"=\"\"><span style=\"font-family:Verdana;\">the following parameters were measured</span><span style=\"font-family:Verdana;\">¡ªLeft ventricular end diastolic diameter, left ventricular
end systolic diameter, transmitral early velocity, isovolumic relaxation time,
and isovolumic contraction time. Tissue Doppler imaging (TDI) was used in the
measure</span></span><span style=\"font-family:Verdana;\">ments of the
early mitral annular velocity (Ea) and the diastolic stiffness was obtained by
calcu</span><span style=\"font-family:Verdana;\">lating the
ratio E\Ea\LVIDd. Index myocardial performance (IMP) was calculated according
to fol</span><span style=\"font-family:Verdana;\">lowing
equation (IVCT + IVRT)/ET for both the control group and hypertensive group.
Results re</span><span style=\"font-family:Verdana;\">veal that
the difference</span><span style=\"font-family:Verdana;\">s</span><span style=\"font-family:Verdana;\"> in the
average value of transmitral early filling velocity (E) between pa</span><span style=\"font-family:Verdana;\">tients and control groups for age range (20</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">-</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">49) and (50</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">-</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">80) were (</span><span><span style=\"line-height:normal;white-space:normal;\">&amp;#8722</span></span><span style=\"font-family:Verdana;\">1.91%)
and (<span style=\"line-height:normal;white-space:normal;\">&amp;#8722</span>3.69%)</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:Verdana;\">re</span><span style=\"font-family:Verdana;\">spectively with p value &gt;0.05 for both
groups, and the change</span><span style=\"font-family:Verdana;\">s</span><span style=\"font-family:Verdana;\"> in LVIDd
between patients and con</span><span style=\"font-family:Verdana;\">trol groups
w</span><span style=\"font-family:Verdana;\">ere</span><span style=\"font-family:Verdana;\"> 0.42%
%K Left Ventricular Stiffness
%K Systemic Hypertension
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=48722