TP-SD , global strain , and LA volume all improved significantly from before to after PVI ( TP-SD , from 9.194.98 % to 6.312.94 % , P = .005 ; global strain , from 48.220.2 % to 58.121.2 % , P = .018 ; LA volume index , 29.510.6 to 25.87.1 mL/m ( 2 ) , P = .04 ) .