Although two-dimensional echocardiography is widely used in both clinical and experimental evaluations of regional cardiac wall motion, there is no established clinical method for quantitative analysis of the wall motion, not even for the normal radial motion observed in short-axis images. Measurement of radial wall motion requires determination of a centroid from which the radii emanate. Depen...

BACKGROUND Failure to achieve myocardial reperfusion often occurs during percutaneous coronary intervention (PCI) in patients with myocardial infarction with ST-segment elevation. We hypothesized that manual thrombus aspiration during primary PCI would favorably influence tissue-level myocardial perfusion and left ventricular (LV) functional recovery and remodeling. METHODS AND RESULTS We pro...

OBJECTIVES This study was designed to determine the effect of gender on the prognostic value of exercise echocardiography. BACKGROUND Limited information exists regarding gender differences in prognostic value of exercise echocardiography. METHODS We obtained follow-up (3.2 +/- 1.7 years) in 5,798 consecutive patients who underwent exercise echocardiography for evaluation of known or suspec...

OBJECTIVES We sought to evaluate if echocardiographic strain measurements could detect acute myocardial ischemia, and to compare this new method with myocardial velocity measurements and wall motion score index. BACKGROUND Tissue Doppler echocardiography (TDE) is a promising method for assessing regional myocardial function. However, myocardial velocities measured by tissue Doppler echocardio...

Thirty-four patients with coronary artery disease were exercised on a bicycle ergometer until they developed angina. There was a highly significant fall in ejection fraction from a mean of 61 1 to 52-9 which was more pronounced in the group with three vessel coronary artery disease. A coronary index was computed which took into account the extent and distribution of coronary artery lesions. Tho...

Creatine kinase-MB isoenzyme release (CK-MB-g-Eq) was correlated with left ventricular (LV) radionuclide gated blood pool wall motion estimates of percent abnormally contracting regions (%ACR), ejection fraction (EF) and quantitative thallium-201 (Tl-201) LV perfusion scintigraphy (Tl-201 perfusion index) during evolving myocardial infarction (MI). Of the 35 patients, 14 had no evidence of eith...

abstract background: clinical risk index of babies (crib), score for neonatal acute physiology (snap), an update of the clinical risk index for babies score (crib ii) and score for neonatal acute physiology - perinatal extension (snap-pe) are scoring devices developed in neonatal intensive care units. this study reviewed these scoring systems in critically ill neonates to determine how well the...

Methods In a prospective, multicenter study, 269 patients with acute anterior or large inferior AMI undergoing primary or rescue PCI ( 24 h from symptom onset) were randomly assigned after successful PCI to receive hyperoxemic reperfusion (treatment group) or normoxemic blood autoreperfusion (control group). Hyperoxemic reperfusion was performed for 90 min using intracoronary AO. The primary en...

Methods 21 patients, mean age 66 (range 41-87 years) with a clear diagnosis of TTC (14 with ST-elevation, 16 with apical ballooning ) and emotional trigger were prospectively studied. CMR-derived LV and RV volumes and EF, RV shapes, RV wall motion index (WMSI, 6-segment model) and Echocardiography derived Pulmonary artery pressure (Pap), tricuspid annular E’,A’,S’, pansystolic excursion (TAPSE)...

Experimental results are presented on a method that eliminatesMach waves from the exhaust of supersonic jets and,hence, that removes a strong component of supersonic jet noise. Eliminationis achievedby surrounding the jet with an annular stream at prescribed velocity and temperature so that all turbulent motions become intrinsically subsonic. No mechanical suppressors are used. Implementation o...