Tricuspid Regurgitation: Knowledge of Tricuspid Valve Morphology, Etiology of Regurgitation, and Grading of Regurgitation Severity.

With the aging of the population, the number of patients with tricuspid regurgitation (TR) is increasing. Severe TR is associated with global morbidity and mortality of cardiovascular events. In recent years, the rapid development of transcatheter interventions for tricuspid valve disease has made TR a current research hotspot. More preoperative information about the patient's tricuspid valve anatomy, the etiology leading to TR, and the severity of TR will aid in intraoperative maneuvers and postoperative prognosis assessments.