Evaluation on the function of tricuspid annulus by transesophageal omni-directional M-mode echocardiography in patients during mitral valve replacement

Abstract

Objective To evaluate the function of tricuspid annulus using omni-directional M-mode echocardioraphy(OME) in patients during mitral valve replacement(MVR), and provide a reference for clinical decision about concomitant tricuspid annuloplasty for patients under MVR. Methods Twenty-five normal subjects were selected as control group. Thirty-three patients under MVR for mitral stenosis were divided into tricuspid annuloplasty group(TVP group, n=17) and non-tricuspid annuloplasty group(NTVP group, n=16). Transesophageal echocardiography (TEE) was performed before and after surgery. The right ventricular fractional area change(RVFAC), maximal tricuspid annular diameter(TADmax), tricuspid annular fractional shortening(TAFS) and tricuspid regurgitation(TR) degree were detected by 2D and color Doppler echocardiography. OME and quantitative tissue velocity imaging(QTVI) were used to measure the peak systolic velocity of tricuspid annular, which were defined as Sm and St. Results In the TVP group, TADmax decreased and TR degree improved significantly compared with preoperative date (P<0.05). Preoperative Sm had nagative correlation with TADmax/BSA (r=-0.53, P<0.01) and RVFAC(r=0.87, P<0.01), and positive correlation with TAFS (r=0.68, P<0.01). Conclusions The peak systolic velocity of tricuspid annulus measured by OME can assess the function of tricuspid annulus additionally, and provide a reference for clinical decision about concomitant tricuspid annuloplasty for patients under MVR. Key words: Echocardioraphy, transesophageal; Mitral valve replacement; Tricuspid annuloplasty; Tricuspid annular peak systolic velocity of tricuspid annular