Percutaneous mitral balloon valvotomy (PMV) has evolved into an effective method for the treatment of patients with symptomatic mitral stenosis. An increase in mitral regurgitation can occur in '45% of patients undergoing PMV. Severe mitral regurgitation can be caused by rupture of chordae or of a papillary muscle. Noncommissural tearing of the mitral leaflet is also an important mechanism of s...

Prosthetic aortic valve and conduit dehiscence with periconduit cavity and ascending aortic aneurysm is an uncommon complication of aortic root surgery. It is usually recognizable at echocardiography due to an abnormal position of the prosthetic valve and conduit in relation to the native aortic annulus in conjunction with an abnormal echolucent periconduit space that fills with color flow. Mit...

d a v p s a o Background. The importance of moderate ischemic itral regurgitation in patients presenting for coronary rtery bypass grafting (CABG) is controversial. Thereore, we tracked the course of unrepaired moderate schemic mitral regurgitation after CABG surgery alone, dentified factors associated with worsening postoperaive ischemic mitral regurgitation, and assessed the imact of unrepair...

In 10 cardiac patients in whom an organic lesion of the mitral valve was exluded by standard investigation procedures during which a diagnostic transseptal catheterization for pressure measurements in the left heart was performed, the authors placed a directional Doppler ultrasonic catheter tip velocimeter at the site of the mitral ring and recorded the mitral flow velocity traces. The pattern ...

Neuronal synchrony is important to network behavior in many brain regions. In the olfactory bulb, principal neurons (mitral cells) project apical dendrites to a common glomerulus where they receive a common input. Synchronized activity within a glomerulus depends on chemical transmission but mitral cells are also electrically coupled. We examined the role of connexin-mediated gap junctions in m...

A 12-year-old child with no previous medical history was referred with a 4-day history of cough, shortness of breath, and peripheral blood eosinophilia. Transthoracic echocardiography showed a soft tissue infiltrating the left ventricular free wall, the lateral mitral annulus, and the mitral valve leaflets. A soft tissue strand connecting the lateral left atrial wall and mitral leaflets across ...

Congenital heart diseases are broadly defined as those cardiac anomalies that are present at birth. By their very nature, such defects have their origin in embryonic development. Congenital mitral valve regurgitation is a rare disease occurring in infancy or childhood. In up to 60% of cases, congenital anomalies of the mitral valve occur in association with other cardiac lesions, and often more...

In the left ventriculogram in the right anterior oblique projection the plane of the mitral valve is seen in profile and the papillary muscle shadows are outlined. The distance from the middle of the papillary muscles to the plane of the mitral valve during systole was used to assess the average length of the chordae tendineae, and the area of the papillary muscle shadows was measured as an ind...

I Beasley B, Kerber K. Does mitral prolapse occur in mitral stenosis? Echocardiographic-angiographic observalions. Chest 1981; 80:56-60 2 Howard PC, Benchimol A, Desser KB. Prolapse of the atrioventricular valves and associated mitral stenosis. A case report. Arizona Med 1978; 33:789-92 3 Weinrauch LA, McDonald DC, DeSilva R. Mitral valve prolapse in rheumatic mitral stenosis. Chest 1977; 72: 7...

Mitral valve repair offers superior long-term survival, freedom from cardiac morbidity, and quality of life in patients with severe mitral regurgitation compared to medical management and mitral valve replacement; it is the treatment of choice in these patients. Mitral valve repair is the only treatment that restores normal life expectancy to otherwise healthy patients with advanced degenerativ...