Differentiation between stunned and infarcted myocardium in the setting of acute ischemia is challenging. Real time myocardial contrast echocardiography allows the simultaneous assessment of myocardial perfusion and function. In the present study we evaluated infarcted and stunned myocardium in an experimental model using real time myocardial contrast echocardiography. Sixteen dogs underwent 18...

PURPOSE Inferior attenuation is a common problem in the interpretation of myocardial perfusion SPECT. We explored whether cardiovascular magnetic resonance (CMR) was a useful adjunct in differentiating between artifactual attenuation of the inferior wall and the presence of myocardial infarction and/or ischemia. METHODS We used CMR to assess resting wall motion, myocardial perfusion, and the ...

BACKGROUND Subendocardial resection is an established surgical technique for the treatment of ventricular tachycardia associated with prior myocardial infarction. Preoperative factors predictive of survival and functional outcome after surgery have not been completely characterized. We hypothesized that a quantitative assessment of regional wall motion would be a sensitive predictor of both sur...

background: early clinical investigations indicate that an infusion of autologous bone-marrow cells into the infarct-related coronary artery is feasible after acute myocardial infarction. there is increasing evidence that cell transplantation may improve the perfusion and contractile function of the ischemic myocardium . the present study reports primarily the safety of intracoronary bone marro...

Cross-sectional echocardiography was used to study left ventricular wall motion in 44 patients with myocardial infarction, and the extent of observed asynergy was correlated with left ventricular function. Echocardiographic studies were performed in short and long axes of the ventricle and nine segments were identified for analysis. Wall motion in each segment was classified as normal, hyperkin...

Acute myocardial infarction (AMI) due to arthropod envenomization has rarely been reported. Herein, we report a 65-year-old woman with clinical manifestations mimicking AMI and left ventricular wall motion abnormality after honeybee sting. The patient eventually recovered from her illness with normal left ventricular wall motion on echocardiogram and T wave inversion on electrocardiogram. We al...

Background Changes in global and regional wall motion between rest and stress are important prognostic markers, uncommonly observed with vasodilator stress radionuclide myocardial perfusion imaging (MPI). Cardiac MRI (CMR) with tagging has the potential to more precisely quantify normal and abnormal ventricular wall motion responses. We herein report CMR findings in 5 very low-likelihood patien...

AIM To evaluate the angiographic, myocardial perfusion, and wall motion abnormalities in patients with severe compared with mild worsening of regional function during dobutamine stress echocardiography (DSE) for evaluation of myocardial ischaemia. METHODS 147 patients with significant coronary artery disease and new or worsening wall motion abnormalities during DSE were enrolled. Left ventric...

Regional myocardial wall motion analysis has been used in clinical routine to assess myocardial disease, such as infarction and hypertrophy. These diseases can be distinguished from normals by looking at the local abnormality of cardiac motion. In this paper, we present a first result of a feature extraction experiment using the Independent Component Analysis (ICA), where abnormal patterns of m...

BACKGROUND The aim of this follow-up study was to investigate the late effects of acute coronary angioplasty (PTCA) on regional wall motion after the subacute phase of myocardial infarction (MI). METHODS AND RESULTS Seventeen patients were investigated initially at a median of 11 days and again at 6 months after acute PTCA for myocardial infarction (< 8 hours after onset of symptoms) by cardi...