3 out of 24 patients with mitral valve prolapse (MVP), mean age 25.7 ± 3.1 displayed markedly thickened redundant and shaggy mitral leaflets in the twodimensional echocardiogram. The anterior leaflet appeared in the parasternal long axis plane club-shaped in diastole. These three female patients...
Radiofrequency Ablation Directionally Alters Geometry and Biomechanical Compliance of Mitral Valve Leaflets: Refinement of a Novel Percutaneous Treatment S... Myxomatous mitral valve disease is a form of mitral valve prolapse, which is characterized by a disorganized collagen matrix with excessive glycosam...
During the contraction period, thickening of one or two leaflets , and tumor like lesions at the end of the leaflets can be observed, and in severe cases, the leaflets may also be shortened. Doppler echocardiography is very intuitive for diagnosing mitral regurgitation. The size and depth of ...
Studies on MMVD progression in dogs have shown that turbulent high-velocity blood flow and changes in blood shear stress around the mitral valve leaflets may produce platelet activation [24, 28]. Moreover, in a recent study of changes in the proteome of platelets in dogs with MMVD-related ...
On the basis of gross morphology of the valve leaflets and annulus, the stenotic valves were subgrouped into domed, unicommissural, bicuspid, tricuspid, ... BM Gikonyo,RV Lucas,JE Edwards - 《Pediatric Cardiology》 被引量: 66发表: 1987年 Morphology of anorexigen-associated valve disease by...
Myxomatous mitral valve disease (MMVD) is a degenerative disease of the valve leaflets, causing left atrial dilatation and eccentric hypertrophy of the left ventricle by hemodynamic instability. Red cell distribution width (RDW) is a hematologic parameter that indicates the variation...
Myxoid leaflets were less stiff circumferentially (4.0 ± 1.6 vs 6.1 ± 1.4 kN/m;P||.001) and radially (4.5 ± 1.1 vs 6.1 ± 1.4 kN/m;P||.001) than normal leaflets. Leaflet strength, however, was similar in both groups.Conclusions:Myxomatous mitral valve leaflets are physically and ...
Collagen fibrils, a major component of mitral valve leaflets, play an important role in defining shape and providing mechanical strength and flexibility. Histopathological studies show that collagen fibrils undergo dramatic changes in the course of myxomatous mitral valve disease in both dogs and humans...
The "mass" was confirmed at operation to be redundant myxomatous mitral valve leaflets. The problem of echocardiographic resolution in the setting of mitral valve prolapse and of the differential diagnosis of mitral mass is discussed in detail.P K Chun...
Increased NADPH-diaphorase activity in canine myxomatous mitral valve leaflets. J Comp Pathol 2003;129:120-30.Olsen LH, Mortensen K, Martinussen T, et al. Increased NADPH-diaphorase activity in canine myxomatous mitral valve leaflets. J Comp Pathol 2003;129:120-130....