(tricuspid regurgitation) Failure of the tricuspid valve to close sufficiently upon contraction of the right ventricle, causing blood to regurgitate (flow backward) into the right atrium.

Backflow of blood from the RIGHT VENTRICLE into the RIGHT ATRIUM due to imperfect closure of the TRICUSPID VALVE.

Dysfunction of the pulmonary valve characterized by incomplete valve closure.

(tricuspid valve regurgitation) The backflow of blood from the right ventricle into the right atrium, owning to imperfect functioning/insufficiency of the tricuspid valve.

(tricuspid valve insufficiency/ regurgitation) Incomplete closure or damage to a valve leaflet of the tricuspid valve, resulting in tricuspid valve backflow.

Tricuspid regurgitation may result from structural alterations of any or all of the components of the tricuspid valve apparatus (see Anatomy). The lesion may be classified as primary when it is caused by an intrinsic abnormality of the valve apparatus or as secondary when it is caused by right ventricular (RV) dilatation.

Tricuspid valve regurgitation is a condition in which the valve between the two right heart chambers (right ventricle and right atrium) doesn't close properly. The malfunctioning valve allows blood to flow back into your heart's upper right chamber (right atrium).

Tricuspid regurgitation (TR) occurs when blood flows backward through the tricuspid valve. In the vast majority of patients, this occurs during systole, but severely elevated right ventricular filling pressure can be associated with diastolic TR. TR can be primary (abnormal valve morphology) or secondary (normal valve morphology). Some...