Parachute mitral valve
A parachute mitral valve is a valvular congenital abnormality usually identified in infants or young children though is can present later in adulthood.
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.
It may occur as a single anomaly but is recognised as part of the Shone complex.
Other recognised associations include a:
- 1. Davachi F, Moller JH, Edwards JE. Diseases of the mitral valve in infancy. An anatomic analysis of 55 cases. Circulation. 1971;43 (4): 565-79. doi:10.1161/01.CIR.43.4.565 - Pubmed citation
- 2. Shone JD, Sellers RD, Anderson RC et-al. The developmental complex of "parachute mitral valve," supravalvular ring of left atrium, subaortic stenosis, and coarctation of aorta. Am. J. Cardiol. 1963;11 : 714-25. - Pubmed citation