3.3 Postoperative Echocardiographic Data
Echocardiographic data are shown in Table 4. Compared with the non-PPM
group, the PPM group had a significantly lower bioprosthetic mitral
valve EOA (PPM: 1.6 ± 0.2, non-PPM: 2.6 ± 0.6, p <
.001). The differences in the peak and mean pressure gradient between
the PPM and non-PPM groups were not statistically significant (Peak
pressure gradient: 17.2 ± 8.5 vs.14.8 ± 6.7, p = .11, mean
pressure gradient: 6.3 ± 3.4 vs. 5.5 ± 2.9, p = .18), though,
interestingly, postoperative LA and LV diastolic diameters were
significantly larger in the PPM group (LA diameter: 56 ± 12 vs. 50 ± 10,p =.001) (LV diastolic diameter: 55 ± 8 vs. 51 ± 9, p =
.031).