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…
Background The mechanism of sudden death in hypertrophic cardiomyopathy (HCM) is ventricular tachyarrhythmia emanating from myocyte disarray, fibrosis, and inhomogeneity in intramyocardial activation. Tissue synchronization imaging (TSI) allows the measurement…
Since the initial clinical description 50 years ago, hypertrophic cardiomyopathy (HCM) still remains the most common cause of sudden cardiac death in young patients. Currently, 5 conventional risk markers (ie,…
Background The objective of this study was to define a simple method of measuring thoracic aortic pulse-wave velocity (PWV) using only an aortic length regression equation based on the subject’s…
A 78-year-old woman presented with progressive dyspnea and atrial flutter and was found to have a right atrial mass. Multimodality cardiac imaging was useful in further characterizing this mass, which…
Ventricular septal rupture (VSR) with dissection of the right ventricular free wall is an extremely rare complication after inferior myocardial infarction. Mortality is 100% without surgical treatment. The optimal surgical…
