Identification of right ventricular infarction in acute inferior wall myocardial infarction by tissue doppler imaging

It's important to identify patient with dominant right ventricular infarction with inferior wall MI in which right ventricular dysfunction is primarily responsible for development of hypotension and cardiogenic shock Jacob, et al., 2000.Aim to assess tissue Doppler imaging is a useful method for the detection of the right ventricular myocardial infarction in patients with acute inferior wall myocardial infarction. Thirty patients, nine females and twenty-one males, admitted to [CCU] at Al-Hussein University Hospital between December 2009 and July 2010, classified into 2 groups, group A 15 without RVI and group B 15 with RVI plus Control group C Ten healthy individuals ;following scheme. History, risk factors, Clinical examination, 12 leads ECG ,Cardiac enzyme and Echocardiography was performed within 48 hours after the MI. As the following. Left ventricular ,Right ventricular study,Pulsed Tissue Doppler parameters show statistically significant difference between groups in JVP, Blood pressure ,cardiac enzymes, Right ventricular ejection fraction ,tricuspid annular motion ,Tricuspid regurgitation, Myocardial systolic velocity, Myocardial early diastolic velocity, Myocardial late diastolic velocity ,Isometric contraction time Jsometric relaxation time, Ejection time, myocardial performance index. The right ventricular MPI increases in patients with RVMI when accompanied by acute inferior wall MI .So RVMI could be diagnosed and predicted correctlyby the use of these Tissue Doppler imaging which are easily obtained

QT inteival and QT dispersion in patients with previous myocardial infarction

The aim of the study was to determine the incidence of long QT interval, QT dispersion and their relation in patients with previous myocardial infarction. Sixty patients with previous myocardial infarction based on a history of prolonged chest pain, ECG changes and/or elevated cardiac enzymes were included in this study. It was found that the patients had mean QT less than or equal to 0.44 sec. and no patient had prolonged QT interval. Abnormal QTc more than 0.44 sec. was found in 12 patients. The mean value of QTc was 0.47 to 0.44 sec. 52% of the patients had normal QT dispersion and the remaining 48% had abnormal QT dispersion. A nonsignificant correlation was detected between QTc and QT dispersion

Non invasive evaluation of left ventricular filling pressure by doppler echocardiography

This study was carried out on 45 patients to evaluate the accuracy of different echo-Doppler parameters for the assessment of LV diastolic function. The patients were divided according to end diastolic pressure [EDP] into two groups. Comparing patients with normal and elevated EDP revealed that the deceleration time of E wave, velocity time integrity [VTI] of E-wave, acceleration slope of A wave, deceleration slope of A wave LA diameter and FS were significant variables. When taking FS into consideration, the echo-Doppler parameters were significantly valuable in the differentiation between patients with normal and elevated EDP