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Parachute mitral valve (or PMV) is a rare congenital heart disease where the mitral valve only has a single papillary muscle from which all chordae tendineae originate. It is caused by an embryologic failure of papillary muscles to divide into two normally distinct columns, giving the mitral valve orifice and chordea an irregular, parachute ...
Supravalvular mitral membrane (SVMM) Parachute mitral valve; Subaortic stenosis (membranous or muscular) Coarctation of the aorta; Of these four defects, supravalvular mitral membrane (SVMM) is the first to occur and triggers the development of the other three defects. Partial complexes, or forme fruste, have also been described. [1]
Parachute mitral valve occurs when all chordae tendineae of the mitral valve are abnormally attached to a single (or fused) papillary muscle. Straddling Mitral Valve occurs when the mitral valve's chordal attachments straddles, or goes through, a ventricular septal defect (VSD) and so has chordae originating on both sides of the ventricular ...
Parachute mitral valve occurs when all the chordae tendineae of the mitral valve attach to a single papillary muscle. [9] [10] [11] This causes mitral valve stenosis at an early age. [10] It is a rare congenital heart defect. [11] Although it often causes mitral insufficiency, it may not present any symptoms. [10]
supravalvular mitral ring, parachute deformity of mitral valve, subaortic stenosis and coarctation of the aorta Siegrist streaks: August Siegrist: ophthalmology: malignant hypertension: hyperpigmented streaks parallel to choroidal vessels Simmonds' test: Franklin Adin Simmonds: orthopaedics: Achilles tendon rupture
In this defect, there is typically a proximal chamber that receives the pulmonic veins and a distal (true) chamber located more anteriorly where it empties into the mitral valve. The membrane that separates the atrium into two parts varies significantly in size and shape. It may appear similar to a diaphragm or be funnel-shaped, band-like ...
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