Anterior mitral leaflet mobility is limited by the basal stay chords
نویسندگان
چکیده
منابع مشابه
Anterior mitral leaflet mobility is limited by the basal stay chords.
BACKGROUND We hypothesize that 2 tendon-like anterior basal stay chords, which remain taut during the entire cardiac cycle, limit the motion of the anterior mitral leaflet. METHODS AND RESULTS Sonomicrometric crystals were implanted in 6 sheep at the insertion of stay chords at anterior mitral leaflet (S1 and S2), papillary muscle tips, fibrous trigones, mitral annulus, and the tip of the ant...
متن کاملAnterior mitral basal 'stay' chords are essential for left ventricular geometry and function.
BACKGROUND AND AIM OF THE STUDY Among the anterior mitral basal chords, two particularly strong and thick stay chords (SC) remain under tension during the entire cardiac cycle. Collagen fibers of the anterior mitral leaflet (AML) are oriented from insertion of the SC on the AML to the fibrous trigones (FT), suggesting that local stress is directed from the papillary muscles (PM) over the SC and...
متن کاملcorrelation between anterior mitral leaflet concavity area and ischemic induced mitral regurgitation severity by echocardiography
functional mitral regurgitation (mr) results from left ventricular remodeling, leaflet tethering or tenting. coronary artery disease is one of the important causes of functional mr due to tethering. detection of functional mr and its severity are important factors in patient prognosis. there are different methods for detection of functional mr and its severity, including anterior mitral leaflet...
متن کاملMechanism of mitral regurgitation in hypertrophic cardiomyopathy: mismatch of posterior to anterior leaflet length and mobility.
BACKGROUND In hypertrophic cardiomyopathy, a spectrum of mitral leaflet abnormalities has been related to the mechanism of mitral systolic anterior motion (SAM), which causes both subaortic obstruction and mitral regurgitation. In the individual patient, SAM and regurgitation vary in parallel; clinically, however, great interindividual differences in mitral regurgitation can occur for comparabl...
متن کاملCardiac Myxoma Originating from the Anterior Mitral Valve Leaflet
Primary cardiac tumors are rare and myxoma is the most common tumor among them. Cardiac myxoma usually occurs in the left atrium. Myxoma originating from mitral valve is extremely rare. We report a case of mitral valve myxoma. The tumor originated from the anterior mitral valve leaflet. The tumor was completely removed and replacement of the mitral valve was not done.
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2002
ISSN: 0735-1097
DOI: 10.1016/s0735-1097(02)81931-3