On follow-up of more than four years, mitral valve area was 1.46 cm2 in the PPAH group and 1.72 cm2 in the no PPAH group (p<0.0001), the occurrence of restenosis (39.1 vs 6.8%, p = 0.000), and free from restenosis 5, 7, 9 years were lower in the PPAH group (92.5%, 57.1%, 20.7% vs 93.9%, 85.9%, 68.6%, respectively).