Evaluation of MC3 valve ring for management of functional tricuspid regurgitation

Objective: To evaluate the clinical efficacy of tricuspid valve (TV) annuloplasty with MC3 valve ring for management of functional tricuspid regurgitation (FTR).

Methods: A total of 85 patients who accepted TV annuloplasty with MC3 valve ring for management of FTR were retrospectively analyzed, of which included moderate tricuspid regurgitation (TR) (45 cases) and severe TR (40 cases). The ratio of regurgitant area to RA area, right atrium and ventricular transverse diameter, annulus diameter were measured by echocardiography at three different stages: before, early stage and 1 year after operation.

Results: At early stage after operation, there were 81 cases of mild TR, 4 cases of moderate TR. At 1 year after operation, there were 82 cases of mild TR , 3 cases of moderate TR. Compared with the results of pre-operation, the ratio of regurgitant area to RA area, right atrium transverse diameter, annulus diamete and right ventricular transverse diameter at early stage and 1 year after operation were significantly reduced ((14.9±4.6)% and (13.1±4.3)% vs (37.7±8.2)%, (37.2±4.9) and (29.6±5.6) vs (42.5±6.1) mm , (27.3±1.0) and (27.2±1.0) vs (32.2±2.4) mm, (35.5±3.7) and (28.1±4.0) vs (36.9±3.4) mm, all P<0.05).The ratio of regurgitant area to RA area, right atrium and ventricular transverse diameter at early stage after operation were significantly reduced than at 1 year after operation (all P<0.05), but there was no significant difference in the annulus diameter between early stage and 1 year after operation (P>0.05). No complications occurred during follow-up.

Conclusions: TV annuloplasty with MC3 valve ring is effective for the management of FTR.