Objective:To assess the early and long-term effects of PBMV,and study the availability of PBMV in patients with serious pulmonary hypertension or in the aged.Methods:The cardiac data of 210 patients before and after PBMV,and 80 patients follow-up 10~14 years were retrospectively analyzed.Results:Achievement ratio of PBMV was 99%(210/212 cases).The early effect of 210 patients(compared before and after PBMV):(1)Mitral valve area(MVA):(0.89±0.35)vs.(2.18±0.37)cm~2(P<0.01);(2)Mitral pressure gradient(MPG):(14....