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According to the World Health Organization classification of cardiomyopathies, left ventricular noncompaction is still an unclassified cardiomyopathy. In 2006, the American Heart Association classified this entity as a primary cardiomyopathy of genetic origin. In 2008, the European Society of Cardiology updated the classification scheme similar to the World(More)
BACKGROUND Left ventricular ejection fraction (EF) is a valuable prognostic index in patients with congestive heart failure (CHF). Although EF can be readily measured, many clinicians use roentgenographic heart size as a clue to differentiate systolic from diastolic dysfunction, even in the absence of solid supportive data. OBJECTIVE To test the(More)
This paper presents an assessment of the steps involved in trajectory synthesis (for example, trajectory layout, trajecto-ry generation, trajectory spacing, trajectory postprocessing, and trajectory verification) for shape-creating manufacturing operations such as rapid prototyping, milling, and electrical discharge machining. The rationale for this paper(More)
A new exponential formula to characterize the human RR-QT relation was evaluated in comparison with Bazett's formula in 16 subjects: 10 healthy, normal men (ages 18 to 30 years) who exercised on a stationary bicycle, and 6 patients (ages 50 to 80 years; 2 women and 4 men) with rate-programmable VVI pacemakers whose rates were changed by an external(More)
Currently boundary representations (b-reps) are a convenient means to exchange solid models between applications in a distributed design environment. There are two widely used approaches that help maintain the consistency of b-reps between applications, e.g., when a b-rep is modified in one application and needs to be updated in the other. One approach(More)
We report a case of massive posterior mitral annular calcification causing severe systolic anterior motion of the anterior mitral leaflet and dynamic left ventricular outflow tract obstruction. Mechanism of genesis of systolic anterior motion by this unusual mechanism is illustrated. Importance of recognizing this mechanism and its implications for surgical(More)
OBJECTIVE The purpose of this study was to describe pregnant patients with mitral stenosis who had intracardiac thrombosis in the absence of atrial fibrillation. STUDY DESIGN We reviewed the clinical course of 3 pregnant women with severe mitral stenosis and normal sinus rhythm who had clinically significant intracardiac thrombosis. RESULTS The first(More)
We hypothesized that ozone (O3) exposure acutely affects cardiovascular hemodynamics in humans and, in particular, in subjects with essential hypertension. We studied 10 nonmedicated hypertensive and six healthy male adults. Each subject, after catheterization of the right heart and a radial artery, was exposed in an environmentally controlled chamber to(More)