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Table 2 Comparison of pre and post ablation LA characteristics on CMR

From: Association of left atrial strain by cardiovascular magnetic resonance with recurrence of atrial fibrillation following catheter ablation

  Pre-ablation Post-ablation p-value
LAV maximum (mL) 112 ± 36 96 ± 30 0.003
LAV maximum index (mL/m2) 52 ± 18 45 ± 14 0.01
LAV minimum (mL) 63 ± 32 53 ± 26 0.03
LAV minimum index (mL/m2) 29 ± 16 25 ± 12 0.046
LAV pre-A (mL) 86 ± 35 73 ± 27 0.007
LAV pre-A index (mL/m2) 40 ± 17 34 ± 13 0.02
LA passive EF (%) 25 ± 12 24 ± 9 0.59
LA active EF (%) 29 ± 15 27 ± 16 0.31
LA total EF (%) 46 ± 15 43 ± 15 0.25
LA expansion index 95 ± 51 88 ± 49 0.41
LVEF 60 ± 9 57 ± 6 0.1
LVEDVI (mL/m2) 86 ± 16 90 ± 25 0.33
LVESVI (mL/m2) 36 ± 11 39 ± 11 0.1
LV mass (mg) 97 ± 33 88 ± 27 0.07
RVEF 53 ± 6 51 ± 6 0.09
RVEDVI (mL/m2) 94 ± 22 93 ± 22 0.89
RVESVI (mL/m2) 45 ± 14 46 ± 13 0.48
RA volume (mL) 143 ± 40 132 ± 39 0.07
RA volume index 68 ± 19 65 ± 19 0.32
RUPV diameter (mm) 19.5 ± 3.2 16.9 ± 3.8  < 0.001
RLPV diameter (mm) 17.9 ± 3.1 16.6 ± 3.1 0.01
LUPV diameter (mm) 15.2 ± 2.5 12.9 ± 3.2  < 0.001
LLPV diameter (mm) 13.9 ± 2.1 11.7 ± 4.5 0.03
R 24.0 ± 10.4 19.8 ± 8.1 0.005
CT 8.4 ± 0.1 5.7 ± 5.3 0.001
CD 15.6 ± 7.1 13.0 ± 6.3 0.02
  1. Significant p-values are shown in bold
  2. EDV, end diastolic volume; EF, ejection fraction; ESV, end systolic volume; LA, left atrium; LAV, left atrial volume; LLPV, left lower pulmonary vein; LUPV, left upper pulmonary vein; LV, left ventricle; LVEDVI, left ventricular end-diastolic volume index; LVESVI, left ventricular end-systolic volume index; RA, right atrium; RLPV, right lower pulmonary vein; RUPV, right upper pulmonary vein; RV, right ventricle; RVEDVI, right ventricular end-diastolic volume index; RVESVI, right ventricular end-systolic volume index; CD, conduit strain; CT, contractile strain; R, reservoir strain