Noninvasive assessment of significant right coronary artery stenosis based on coronary flow velocity reserve in the right coronary artery by transthoracic Doppler echocardiography.

Background: Coronary flow velocity reserve (CFVR) measured by transthoracic Doppler echocardiography (TTDE) has been reported to be useful for the noninvasive assessment of coronary stenosis in the left anterior descending artery. However, the measurement of CFVR in the right coronary artery by TTDE has not yet been validated in a clinical study.

Objective: The aim of this study was to evaluate whether CFVR by TTDE can detect significant stenosis in the right coronary artery.

An early predictor of left ventricular remodeling after reperfused anterior acute myocardial infarction: ratio of peak E wave velocity/flow propagation velocity and mitral E wave deceleration time.

Several studies have demonstrated that the ratio of peak E wave velocity/flow propagation velocity (E/FPV) using color M-mode Doppler echocardiography and the mitral E wave deceleration time make it possible to estimate left ventricular filling pressure. Recent studies have indicated that deceleration time can predict left ventricular dilation after acute myocardial infarction. The purpose of this study was to determine whether the early assessment of deceleration time and E/FPV could predict left ventricular dilation after acute myocardial infarction.

Noninvasive estimation of pulmonary capillary wedge pressure by color M-mode Doppler echocardiography in patients with acute myocardial infarction.

The peak early diastolic filling velocity/flow propagation velocity (E/FPV) by color M-mode Doppler provides a better estimate of pulmonary capillary wedge pressure (PCWP) than transmitral or pulmonary venous flow. However, the value of E/FPV for the assessment of PCWP has not been evaluated in patients with acute myocardial infarction. We investigated the correlation between E/FPV and PCWP and whether PCWP can be estimated from E/FPV in patients with acute myocardial infarction.