Publications by authors named "John B Dickey"
• PFEs are a cause of cardioembolic events. • TI represents a newer photorealistic rendering of 3D echo. • TI may assist in the identification of intracardiac masses, including PFEs.
View Article and Find Full Text PDFBackground: Mitral annular calcification (MAC) poses many challenges to the evaluation of diastolic function using standard echocardiography. Left atrial (LA) strain and left ventricular early diastolic strain rate (DSr) measured by speckle-tracking echocardiography (STE) are emerging techniques in the noninvasive evaluation of diastolic function. We aim to evaluate the utility of LA strain and early DSr in predicting elevated left ventricular filling pressures (LVFP) in patients with MAC and compare their effectiveness to ratio of mitral inflow velocity in early and late diastole (E/A).
View Article and Find Full Text PDFArticle Synopsis
- Atrial cardiopathy may be linked to embolic stroke of undetermined source (ESUS), with left atrial (LA) strain potentially identifying early atrial issues before structural changes occur.
- The study analyzed 656 patients with either ESUS or noncardioembolic strokes using speckle tracking echocardiography to measure LA strain and its connection to stroke type and future atrial fibrillation (AF) detection.
- Results indicated that lower LA strain levels were significantly associated with both the occurrence of ESUS and later AF detection among ESUS patients, suggesting that measuring LA strain could help improve risk assessment and prevention strategies.
The widespread use of cardiac computed tomography and cardiac magnetic resonance imaging in patients undergoing echocardiography presents an opportunity to correlate the images side by side. Accordingly, the aim of this report is to review aspects of the standard echocardiographic examination alongside similarly oriented images from the two tomographic imaging modalities. It is hoped that this exercise will enhance understanding of the structures depicted by echocardiography as they relate to other structures in the thorax.
View Article and Find Full Text PDFHeart failure (HF) with preserved ejection fraction (HFpEF) accounts for half of all HF diagnoses, and its prevalence is increasing at an alarming rate. Lately, it has been recognized as a clinical syndrome due to diverse underlying etiology and pathophysiological mechanisms. The classic echocardiographic features of HFpEF have been well described as preserved ejection fraction (≥50%), left ventricular hypertrophy, and left atrial enlargement.
View Article and Find Full Text PDFBackground And Aims: Complications of bicuspid aortic valve commonly include aortic stenosis, aortic regurgitation, and ascending aortic dilation. The progression of these lesions is not well described.
Materials And Methods: We reviewed 249 bicuspid aortic valve patients with at least two echocardiograms from 2006 to 2016.
Objectives: This study sought to evaluate a decision algorithm for the estimation of left ventricular filling pressure (LVFP) in patients with mitral annular calcification (MAC).
Background: In a single center study, Abudiab et al evaluated echocardiographic parameters to estimate LVFP in patients with MAC against invasive hemodynamic measurements and developed a decision algorithm which demonstrated high predictive accuracy.
Methods: Retrospectively, 55 patients (mean age 68.