Right Ventricular Function in Patients with First Inferior Myocardial Infarction : Assessrnent by Tricupid Annular Motion and Triccuspid Annular Velocity

Abstract

Analysis of RV function is considered difficult and burdened with inaccuracies. The major difficult relates to the complex shape of the RV chamber. Contraction and relaxation of the ventricles along the long axis plays an important role for cardiac function. The motion of mitral and tricuspid annulus reflects shortening of the ventricles along the long axis. Because of the simplicity of recording the annular motion, some previous studies, have used the amplitude of tricuspid annular motion at RV free wall in assessment of R V function. Recent development of a new technique that uses Doppler tissue imaging (DTT) to analyze myocardial velocities open up a new way to assess cardiac function. DTI is a :modified Doppler technique that allows measurements of low velocities from the myocardial wall several repmis have been published already on DTI and ventricular function. However, this technique has not been used to the same extent to assess RV function after MI. * Aim of The Work : Is to assess the RV Function in patients with first inferior MI with the use of tricuspid annular motion and tricuspid annular velocity by pulsed wave Doppler tissue imaging. * Subjects and Methods: : Forty-five patients presenting with acute MI have been studied to assess the effect of MI on RV function. Ten age-and sex-matched healthy persons were taken as control (group III). A careful history was taken and clinical examination as. well as cardiac enzymes was done for every subject. A twelve lead ECG beside V4R were recorded in order to detect RV involvement.