<unk>  is a heart problem in which the valve that separates the right upper heart chamber (atrium) and the right lower heart chamber (ventricle) of the heart does not close properly and slips out of place. This prolapse interrupts the normal blood flow.
Tricuspid prolapse
Mitral valve prolapse
Annuloaortic ectasia
Tricuspid stenosis
Mitral valve sclerosis
Hypertrophic cardiomyopathy
Pulmonary vein stenosis
Pulmonary valve stenosis