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Table 2 Echocardiographic and strain variables of patients with atrial fibrillation (AF) as compared to the control group

From: Speckle echocardiographic left atrial strain and stiffness index as predictors of maintenance of sinus rhythm after cardioversion for atrial fibrillation: a prospective study

Echo variables AF (n=41) Controls (n=41) P value
LVIDd, mm 50.2 ± 2.6 44.8 ± 1.8 <0.01
LVIDs, mm 35.6 ± 3.2 28.0 ± 1.8 <0.01
STd, mm 10 ± 0.6 8.9 ± 0.6 <0.01
PWTd, mm 10 ± 0.6 8.1 ± 0.6 <0.01
LVEF (%) 54.0 ± 3.6 65.1 ± 1.0 <0.01
LAD, mm 45.9 ± 4.0 33.4 ± 2.0 <0.01
LAVI, ml/M2 34.7 ± 4.0 23.4 ± 3.2 <0.01
E/E’ 10.7 ± 1.8 7.6 ± 0.8 <0.01
  Pre- CV Post- CV P value   
2CLAS, % 12.7 (10.2 – 15.2) 16.5 (13.2 – 19.9) 0.01 38.3 (33.1 – 43.5) <0.01
4CLAS, % 11.0 (8.6 – 13.5) 15.2 (12.4 – 18.0) <0.01 33.1 (29.6 – 36.6) <0.01
LAS, % 11.9 (9.8 – 13.9) 15.9 (13.1 – 18.7) <0.01 35.7 (32.1 – 39.3) <0.01
2CLASt 1.06 (0.81 – 1.32) 1.25 (0.16 – 2.33) 0.67 0.24 (0.19 – 0.28) <0.01
4CLASt 1.57 (1.04 – 2.10) 0.85 (0.61 – 1.09) 0.02 0.24 (0.20 – 0.28) <0.01
LASt 1.32 (0.97 – 1.67) 1.05 (0.44 – 1.66) 0.62 0.23 (0.19 – 0.27) <0.01
  1. LVIDd – Left ventricular internal diameter at end- diastole, LVIDs – Left ventricular internal diameter at end- systole, STd – Interventricular septum thickness at end-diastole, PWTd – Left ventricular posterior wall thickness at end-diastole, LVEF – Left ventricular ejection fraction, LAD – Left atrial diameter, LAVI – Left atrial volume index, E = early filling velocity of transmitral Doppler flow, E’ = Average early diastolic velocity of medial and lateral mitral annulus, 2CLAS - 2 chamber average peak systolic strain, 4CLAS - 4 chamber average peak systolic strain, LAS – Mean peak systolic strain of 2C and 4C, 2CLASt - 2 chamber left atrial stiffness, 4CLASt – 4 chamber left atrial stiffness, LASt – Mean left atrial stiffness of 2C and 4C.