Dr Boris Orlov

Secondary Tricuspid Regurgitation
Tricuspid Annular Dysfunction
Kim et al. support this theory in an echocardiographic study of 75
patients with right ventricular dilatation.
Predictive of the severity of secondary tricuspid regurgitation were:
• eccentricity of the right ventricle
• tricuspid valve tethering (tenting) area
• end-diastolic tricuspid annular diameter
Non significant predictive factors of the severity of secondary tricuspid
regurgitation were:
• the right ventricular dimensions
• right ventricular function
• pulmonary artery pressures
All these suggesting that change in geometry of the right ventricle and
the consequent papillary muscle displacement, is the critical factor in
the pathophysiology of tricuspid regurgitation.
Whereas such eccentric displacement of the ventricle is more likely to
occur in the globally dilated ventricle, it can also occur in normal-sized
ventricles
Kim HK, Kim YJ, Park JS, et al.: Am J Cardiol 2006, 98:236–242.