realized in has material basis at all times has occurrent part tricuspid valve improper close during right ventricular systole retrograd blood flow through tricuspid valve during right ventricular systole tricuspid valve disorder tricuspid valve insufficiency Tricuspid regurgitation MSH:D014262 UMLS_CUI:C0040961 NCI:C50843 NCI:C50842 DOID:4080 SNOMEDCT_2010_1_31:155347006 A heart valve disease where the heart's tricuspid valve fails to close properly during systole. As a result, with each heart beat, blood is pumped out from the right side of the heart in the opposite direction to normal. A disease in which an abnormal structure in a mitral valve prevents it to close propertly during systole, occasioning a retrograd blood flow through the valve. SNOMEDCT_2010_1_31:266298007 SNOMEDCT_2010_1_31:111287006 Tricuspid valve regurgitation (disorder) SNOMEDCT_2010_1_31:251009000 disease_ontology Tricuspid incompetence disease disease course