<unk>  is defined as abnormal protrusion of one or more of the leaflets of the tricuspid valve into the right atrium during systole.
Tricuspid prolapse
Mitral valve prolapse
Annuloaortic ectasia
Tricuspid stenosis
Mitral valve sclerosis
Hypertrophic cardiomyopathy
Pulmonary vein stenosis
Pulmonary valve stenosis