Background Mechanical discoordination as studied by magnetic resonance imaging has been shown to be a better predictor of left ventricular (LV) reverse remodeling after cardiac resynchronization therapy (CRT) compared with…
Background Patients with single–right ventricle (RV) physiology are at increased risk for myocardial dysfunction and mechanical dyssynchrony. Newer echocardiographic modalities may be better able to quantitate right ventricular function in…
Background The influence of right ventricular (RV) function on exercise capacity has been poorly explored in mitral stenosis (MS). The objective of this study was to assess the determinants of…
Background Compared with previous three-dimensional (3D) echocardiographic scanners, high–volume rate scanners allow higher temporal resolution and the possibility of displaying cropped images side by side. These new features make 3D…
Objective Risk stratification of patients presenting to the emergency department (ED) with suspected cardiac chest pain (CP) and an undifferentiated electrocardiogram (ECG) is difficult. We hypothesized that in these patients…
Background Normal Doppler-derived hemodynamic data for mitral valve bioprostheses are limited. Methods To establish parameters for identifying normal function for each of the 3 types of bioprostheses examined, we conducted…
The amyloidoses are a spectrum of disorders characterized by tissue deposition of various types of misfolded proteins. In light-chain (AL) amyloidosis, the most common subtype in the West, the culprit…
Background The prognostic value of Doppler myocardial imaging, including myocardial velocity imaging, strain, and strain rate imaging, in patients with primary (AL) amyloidosis is uncertain. The aim of this longitudinal…
Background The optimal right ventricular pacing site remains controversial. The aim of this study was to assess how acute right ventricular outflow tract (RVOT) pacing affects global left ventricular function…
Because ventricular contraction is triggered by electrical activation, it seems logical to imagine that ventricles that are paced electrically might demonstrate differences in patterns of contraction from those that are…
