Etiology of Moderate Tricuspid Regurgitation
Primary Causes
- Infective endocarditis is a primary cause of tricuspid regurgitation, particularly common in intravenous drug users, according to the European Heart Journal 4, 5
- Rheumatic heart disease is another primary cause, often accompanied by left-sided valve disease, especially mitral stenosis, as reported by the European Heart Journal 4, 5
- Myxomatous degeneration, characterized by leaflet prolapse or flail leaflet, is a primary cause of tricuspid regurgitation, as noted by the European Heart Journal 4
- Carcinoid syndrome causes valve thickening and retraction, leading to tricuspid regurgitation, according to the European Heart Journal 4, 5
- Congenital abnormalities, including Ebstein's anomaly and dysplastic valves, are primary causes of tricuspid regurgitation, as reported by the European Heart Journal 4, 5
- Drug-induced valve disease, where certain medications cause valvular damage, is a primary cause of tricuspid regurgitation, according to the European Heart Journal 4, 5
- Endomyocardial fibrosis is a primary cause of tricuspid regurgitation, as noted by the European Heart Journal 4, 5
- Iatrogenic damage from cardiac procedures or device placement is a primary cause of tricuspid regurgitation, according to the European Heart Journal 4, 5
- Thoracic trauma is a primary cause of tricuspid regurgitation, as reported by the European Heart Journal 4, 5
Secondary Causes
- Left-sided valve disease, such as mitral regurgitation or stenosis, can cause elevated left atrial pressure and secondary pulmonary hypertension, leading to tricuspid regurgitation, as reported by the European Heart Journal 1, 2
- Left ventricular dysfunction can lead to elevated pulmonary pressures, causing tricuspid regurgitation, according to the European Heart Journal 1, 2
- Right ventricular dilation from pressure or volume overload can cause tricuspid regurgitation, as noted by the European Heart Journal 6, 4
- Right ventricular dysfunction, intrinsic RV disease, or cardiomyopathy can cause tricuspid regurgitation, according to the European Heart Journal 1, 2
- Tricuspid annular dilation, where the annulus becomes flat and planar rather than saddle-shaped, can cause tricuspid regurgitation, as reported by the European Heart Journal 6
- Papillary muscle displacement and leaflet tethering from RV remodeling can cause tricuspid regurgitation, according to the European Heart Journal 6
- Primary pulmonary hypertension can cause tricuspid regurgitation, as noted by the European Heart Journal 1, 2
- Secondary pulmonary hypertension from left heart disease, chronic lung disease, or pulmonary embolism can cause tricuspid regurgitation, according to the European Heart Journal 1, 2
- Longstanding atrial fibrillation can cause progressive annular dilation independent of ventricular dysfunction, leading to tricuspid regurgitation, as reported by the European Heart Journal 1, 2, 7
- AF-induced annular remodeling is present in 70-88% of patients with severe tricuspid regurgitation, according to Praxis Medical Insights 7
- Cardiac implantable electronic device leads crossing the tricuspid valve can cause leaflet damage or impair coaptation, leading to tricuspid regurgitation, as noted by the European Heart Journal 1, 2
- Pacemaker or ICD leads may cause direct valve trauma or interfere with leaflet motion, causing tricuspid regurgitation, according to the Journal of the American College of Cardiology 8
- Aging is associated with progressive valve changes, leading to tricuspid regurgitation, as reported by the European Heart Journal 1, 2
- The American College of Cardiology recommends considering concomitant tricuspid repair when the tricuspid annular diameter is ≥40 mm (or ≥21 mm/m²) at the time of left-sided valve surgery, as tricuspid regurgitation often persists or progresses even after successful treatment of left-sided lesions 8, 3