parachute mitral valve

A parachute mitral valve is a valvular congenital abnormality usually identified in infants or young children, though it can present later, in adulthood.

Pathology

Parachute mitral valves occur when all the chordae tendineae are attached to a single papillary muscle origin. Unlike the normal situation where there are two papillary muscles providing attachment to the two leaflets, this single-origin means the valve has limited opening, thus causing a relative obstruction. When presenting in infancy, the condition usually progresses to mitral stenosis.

Associations

It may occur as a single anomaly but is recognized as part of the Shone complex.

Other recognized associations include:

• supravalvular mitral ring
• subaortic stenosis
• aortic coarctation

See also

• mitral valve disease
• mitral valve

Siehe auch:

• Aortenisthmusstenose
• Mitralklappenstenose
• Shone complex

und weiter:

• shone syndrome
• Mitralklappe