منابع مشابه
The myocardium in mitral regurgitation: a tale of 2 ventricles.
M uscles (from the tensor tympani to the left ventricle [LV]) are in the business of generating force. In cardiac mechanics, the innate ability to generate force independently of preload is called contractility. A central tenet of cardiology is that the prognosis of most cardiac diseases is determined in large part by the health or disarray of the myocardium conferred by this property of contra...
متن کاملSevere ischemic mitral regurgitation despite normally contracting subpapillary myocardium.
Ischemic mitral regurgitation (MR) is common and increases heart failure and mortality after myocardial infarction.1,2 It is caused by left ventricle (LV) remodeling and subsequent papillary muscle (PM) displacement, with secondary mitral leaflet tethering. It can be seen classically in global LV dilatation and dysfunction or with more local remodeling involving the posterior PM and inferoposte...
متن کاملMitral regurgitation.
Accurate clinical assessment of the severity of mitral regurgitation is often difficult, and left ventricular cine-angiocardiography is probably the most commonly used method of estimating it. It is therefore important to try to determine the accuracy of this method and to identify as far as possible any causes of error. We have attempted to do this in a series of 137 patients submitted to oper...
متن کاملFunctional Mitral Regurgitation: If the Myocardium Is Guilty Do We Also Need to ‘rehabilitate’ the Valve?
Mitral regurgitation (MR) is the most frequent valvulopathy in the general population with an incidence that grows with age and is associated with a poor prognosis. Regardless of its primary cause, which can be both ischaemic and non-ischaemic cardiomyopathy, it finally activates a self-feeding process. Due to the complexity of mitral valve (MV) apparatus and its interaction with the myocardium...
متن کاملMitral annular kinetics in mitral regurgitation
Methods Population: Patients with degenerative mitral regurgitation (n = 35) with normal LV EF pre and 12 months post mitral valve repair. Normal volunteers (n = 51). Image Acquisition: All participants underwent MRI on a 1.5T scanner (GE Healthcare) optimized for cardiac application. An ECG-gated, breath-hold steady state free precision technique was used to obtain 2 chamber and 4 chamber view...
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ژورنال
عنوان ژورنال: Circulation
سال: 2013
ISSN: 0009-7322,1524-4539
DOI: 10.1161/circulationaha.113.002126