baseline(n=34) final follow-up (n=34) P value
QRSd (ms) 184.2±23.67 120.5±16.67 0.000
NYHA classification 2.55±0.91 2.00±0.76 0.000
final LA size 47.44±7.14 45.56±7.78 0.010
LVEDD (mm) 59.29±7.74 53.91±5.92 0.000
MR 10 6 0.219
TR 10 8 0.727
LVEF (%) 33.76±7.54 40.41±9.06 0.000