Study limitations
There are several limitations in our study. The retrospective study
represents the major limitation of our study. The number of patients in
BAV group was limited, but the prevalence of BAV versus TAV patients is
similar to previous studies. Aortic dimensions were measured and
analyzed by echocardiography, either at baseline or at follow up.
Another limitation is that we used a proximal aortic diameter of 45mm as
our uniform cutoff value.