Clinical value of transthoracic three-dimensional echocardiography in the evaluation of mitral valve configuration in patients with functional mitral regurgitation
Objective To explore the clinical application value of transthoracic three-dimensional echocardiography in evaluating mitral valve configuration in patients with atrial and ventricular functional mitral regurgitation.Methods Fifty-three patients with atrial functional mitral regurgitation(AFMR group)and 68 patients with ventricular functional mitral regurgitation(VFMR group)were selected from the department of cardiology of our hospital,Additionally,50 cases of age and sex-matched healthy volunteers were included as the control group.Mitral valve parameters,including anterior-posterior diameter(AP),anterior leaflet-to-posterior leaflet diameter(ALPM),ratio of AP and ALPM(AP/ALPM),annular height(AH),annular circumference(CD),annular area(AA),non-planar angle(NPA),anterior leaflet area(ALA),posterior leaflet area(PLA),total leaflet area(TLA),tenting volume(VTent),tenting height(HTent),posterior leaflet angle(PLθ)and ratio of TLA and AA(TLA/AA)in each group were measured by transthoracic real-time three-dimensional echocardiography.The differences of above parameters among the groups were compared.Results Compared with the control group,AP,ALPM,AH,CD,AA,NPA,ALA,PLA,TLA and PLθ were increased,and TLA/AA was decreased in the AFMR group and the VFMR group,VTent and HTent were decreased in the AFMR group,VTent and HTent were increased in the VFMR group,and the differences were statistically significant(all P<0.05).Compared with the AFMR group,AP,ALA,PLA,TLA,TLA/AA,VTent,HTent and AP/ALPM were increased,ALPM and PLθ were decreased,and the differences were statistically significant(all P<0.05).Conclusion Transthoracic three-dimensional echocardiography can quantitatively assess the mitral valve configuration in patients with atrial and ventricular functional mitral regurgitation,providing valuable reference clinical intervention.
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