Criteria
Tricuspid stenosis (TS) severity
Although there are no clearly defined criteria in the literature for TS severity, severe TS is usually defined by the onset of overt symptoms accompanied by a mean gradient by echocardiogram or cardiac catheterisation of ≥5 mmHg or >7 to 10 mmHg depending on the method and definition.[30][31][32][33] Mild to moderate TS is usually asymptomatic, and has no clearly defined gradient range beyond the definition of TS diagnosed on a gradient of ≥2 mmHg. [Figure caption and citation for the preceding image starts]: Haemodynamic tracings obtained during cardiac catheterisation from a woman with moderate to severe rheumatic tricuspid valve stenosisFrom the personal collection of Martin Bocks; used with permission [Citation ends].
Supportive findings for haemodynamically significant TS include right atrial enlargement and a dilated inferior vena cava.
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