Cardiovascular · UKMLA & AKT
Tricuspid stenosis
A free high-yield preview for the UKMLA Applied Knowledge Test, covering how to recognise this condition. The full SA Note notes add investigations, management and complications, with practice questions on this topic.
Key high-yield points
- Rare valvular lesion causing obstruction to right ventricular inflow during diastole → right atrial hypertension → systemic venous congestion
- Most common cause: rheumatic heart disease (almost always with concurrent mitral stenosis)
- Carcinoid syndrome - circulating serotonin causes fibrous plaques on right-sided valves; tricuspid stenosis + pulmonary stenosis are characteristic; left-sided valves spared (liver inactivates mediators) unless hepatic metastases
- Congenital tricuspid stenosis - extremely rare; Ebstein's anomaly primarily causes regurgitation not stenosis
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