Effect of Position Changes on Myocardial Velocity in Healthy Subjects Evaluated by Tissue Doppler Echocardiography*

Abstract

Tricuspid anulus myocardial tissue velocities may be significantly influenced by changing of position in healthy subjects. Effect of position changes should be considered in the assessment of these velocities.

Effect of food intake on left and right ventricular systolic tissue Doppler measurements

“…A large number of studies have investigated the influence of age, gender, postural change, lower body negative pressure, exercise, pharmacological manoeuvres, etc. on tissue Doppler parameters, and several reference values have been proposed (Wilkenshoff et al, 1998;Alam et al, 1999;Kukulski et al, 2000;Nikitin et al, 2003;Am a et al, 2004;Pel a et al, 2004;Lindqvist et al, 2005;Innelli et al, 2008;Pirat et al, 2008;Chahal et al, 2010;Uz et al, 2011). Food intake is known to significantly alter the hemodynamics of the heart (Fagan et al, 1986;Ishimine et al, 1994;Gilligan et al, 1996).…”

Regional Atrial Myocardial Velocity in Normal Fetuses: Evaluation by Quantitative Tissue Velocity Imaging

“…[1][2][3][4][5][6][7][8] Recently, several studies reported the feasibility of TDI for assessing fetal cardiac function, demonstrating ventricular myocardial velocity changes in relation to advancing gestational age. [1][2][3][4][5][6][7][8] Recently, several studies reported the feasibility of TDI for assessing fetal cardiac function, demonstrating ventricular myocardial velocity changes in relation to advancing gestational age.…”

“…Tissue Doppler imaging (TDI) represents a new development of the Doppler technique, allowing direct measurements of contraction and relaxation velocities directly from the myocardium. [1][2][3][4][5][6][7][8] Recently, several studies reported the feasibility of TDI for assessing fetal cardiac function, demonstrating ventricular myocardial velocity changes in relation to advancing gestational age. [9][10][11][12] TDI includes several new techniques, such as quantitative tissue velocity imaging (QTVI) and strain and strain rate imaging.…”