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AIMS Controversy exists regarding the relative status of resting myocardial blood flow (MBF), coronary flow reserve (CFR), and contractile reserve (CR) in hibernating myocardium (HM). We hypothesized that CFR is more profoundly affected than resting MBF parameters in HM. Thus, resting MBF assessed by myocardial contrast echocardiography (MCE) will be more(More)
AIMS Patients attending hospital with suspected acute coronary syndrome (ACS), non-diagnostic electrocardiogram (ECG), and negative troponin present a diagnostic dilemma for admitting physicians. We sought to determine the clinical and economic impact of stress echocardiography (SEcho) when compared with exercise ECG (ExECG) in the assessment of these(More)
We hypothesized that myocardial contrast echocardiography (MCE) could be used to stratify risk in patients with suspected acute coronary syndrome but a nondiagnostic electrocardiogram and negative troponin. Pretest Thrombolysis In Myocardial Infarction (TIMI) scores were determined. Exercise electrocardiographic data in those patients undergoing treadmill(More)
BACKGROUND Assessment of left ventricular (LV) remodeling after acute myocardial infarction (AMI) has both therapeutic and prognostic implications. Low-power contrast echocardiography (CE) has the advantage of simultaneously assessing myocardial perfusion and LV remodeling. OBJECTIVE This study aimed to evaluate the accuracy of low-power CE to assess LV(More)
Adequate collateral blood flow at rest can sustain myocardial viability despite persistent occlusion of the infarct-related artery (IRA) in acute myocardial infarction (AMI). This has therapeutic and prognostic implications. Studies addressing the value of intravenous myocardial contrast echocardiography (MCE) to detect collateral blood flow after AMI in(More)
Fetus papyraceus is a rare condition occurring in both monochorionic and dichorionic multiple gestations. Assocated with case presented were two interesting and uncommon findings: velamentous insertion of the umbilical cord of the blighted fetus and a congenital abonormality of the surviving fetus. This case is the first known intrauterine monitoring of a(More)
BACKGROUND Distinguishing ischemic from nonischemic origin in patients presenting with acute heart failure (AHF) not resulting from acute myocardial infarction has both therapeutic and prognostic implications. The aim of the study was to assess whether myocardial contrast echocardiography (MCE) can identify underlying coronary artery disease (CAD) as the(More)
OBJECTIVE To compare exercise electrocardiography (ExECG) and stress echocardiography (SE) in the risk stratification of patients presenting to hospital with cardiac-sounding chest pain, non-diagnostic ECGs and negative cardiac Troponin. METHODS Patients presenting with acute chest pain were prospectively randomised to early ExECG or SE. A post-test(More)
Myocardial uptake using (99m)Tc-sestamibi single photon emission computed tomography (SPECT) depends largely on myocardial microvascular volume. Myocardial contrast echocardiography (MCE) is a relatively new technique that detects not only microvascular volume but also blood flow. These differing mechanisms may affect the relative accuracies of MCE and(More)
BACKGROUND Single photon-emission computed tomography (SPECT) is widely used for the assessment of hibernating myocardium (HM). The aim of this study was to test the hypothesis that myocardial contrast echocardiography (MCE), because of its better spatial and temporal resolution, would be superior to SPECT for the detection of HM. METHODS Thirty-nine(More)