“… 248 It is divided into two categories: primary (or organic) and secondary tricuspid regurgitation, which is the most common form. Namely, only 8% to 10% of tricuspid regurgitation cases are primary, 246 being associated with rheumatic heart disease, pacemaker electrode and defibrillator leads (iatrogenic complications) myxomatous degeneration, myocardial degeneration, tricuspid valve prolapse, infectious diseases (e.g., endocarditis) and congenital heart diseases (e.g., Ebstein's anomaly). It may also be related to postoperative complications.…”