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Table 2 Echocardiographic parameters before and after surgery

From: Post-operative left atrial volume index is a predictor of the occurrence of permanent atrial fibrillation after mitral valve surgery in patients who undergo mitral valve surgery

  NSR (n = 361) AF (n = 81) p
Before surgery    
 LV end diastolic dimension (mm) 56.6 ± 10.8 55.0 ± 10.9 0.375
 LV end systolic dimension (mm) 38.4 ± 9.2 38.7 ± 9.9 0.863
 LV ejection fraction (%) 62.7 ± 10.0 58.9 ± 14.1 0.026
 LA antero-posterior dimension (AP) (mm) 50.7 ± 8.7 53.1 ± 6.9 0.080
 LA medio-lateral dimension (ML) (mm) 56.2 ± 10.6 58.6 ± 9.9 0.339
 LA supero-inferior dimension (SI) (mm) 62.4 ± 9.7 60.4 ± 9.1 0.372
 LA volume index (ml/m2)a 58.4 ± 24.9 62.9 ± 22.8 0.399
 TR grade 0.4 ± 0.8 1.2 ± 1.1 0.005
 Estimated PAP 39.2 ± 17.5 44.5 ± 18.4 0.252
After surgery    
 LV end diastolic dimension (mm) 48.9 ± 5.3 50.1 ± 8.9 0.126
 LV end systolic dimension (mm) 33.8 ± 5.8 35.9 ± 10.8 0.015
 LV ejection fraction (%) 60.9 ± 9.5 57.2 ± 13.8 0.006
 LA AP dimension (mm) 42.9 ± 6.0 50.7 ± 8.1 < .001
 LA ML dimension (mm) 50.3 ± 6.8 56.3 ± 7.5 < .001
 LA SI dimension (mm) 57.3 ± 27.5 61.8 ± 8.2 0.172
 LA AP change (mm) 7.7 ± 8.4 4.1 ± 7.9 0.011
 LA ML change (mm) 6.7 ± 10.4 3.4 ± 10.1 0.197
 LA SI change (mm) 7.4 ± 9.0 1.3 ± 8.3 0.005
 LA volume index (ml/m2) 37.9 ± 12.6 52.1 ± 15.6 < .001
 LA volume change (ml/m2) 20.5 ± 21.3 10.8 ± 23.4 0.041
 LA volume change % 28.1 ± 27.9 9.5 ± 36.8 < .001
 MDPG of the MV (mmHg) 3.5 ± 1.4 3.9 ± 1.5 0.023
 Residual mitral regurgitation    0.337
  No 352 (97.5%) 77 (95.1%)  
  Trivial 8 (2.2%) 3 (3.7%)  
  More than grade I 1 (0.3%) 1 (1.2%)  
 TR grade 0.3 ± 0.6 1.0 ± 1.0 < 0.001
 Estimated PAP 26.4 ± 6.6 29.8 ± 7.1 0.001
 TAP or TVR 33 (7.5%) 6 (1.4%) 0.828
  1. aLA volume index was available only in 200 patients (176 of NSR, 24 of AF); NSR normal sinus rhythm, AF atrial fibrillation, LV left ventricular, LA left atrial, MDPG mean diastolic pressure gradient, TR tricuspid regurgitation, PAP pulmonary artery pressure, TAP tricuspid valve repair with an annuloplasty ring, TVR tricuspid valve replacement