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Table 1 General characteristics of the study population. Clinical and echocardiographic features of the study population

From: Left atrial strain reproducibility using vendor-dependent and vendor-independent software

Parameters Normal group (n = 32) AF group (n = 32) Total (n = 64) P
Age(y) 32.3 ± 10.3 55.9 ± 11.5 44.1 ± 16.1 < 0.001
Hight (cm) 162.2 ± 6.3 165.8 ± 7.2 164.0 ± 7.0 0.039
Weight (kg) 58.1 ± 9.6 68.7 ± 12.4 63.4 ± 12.2 < 0.001
Body weight index (kg/m2) 21.9 ± 2.4 24.9 ± 3.3 23.4 ± 3.2 < 0.001
Body surface area(m2) 1.6 ± 0.2 1.8 ± 0.2 1.7 ± 0.2 < 0.001
Systolic pressure (mmHg) 111.5 ± 7.9 132.3 ± 20.8 121.9 ± 18.8 < 0.001
Diastolic pressure (mmHg) 72.3 ± 6.2 75.3 ± 12.4 73.8 ± 9.8 0.224
2-chamber heart rate (bpm) 68.1 ± 9.4 66.0 ± 11.9 67.1 ± 10.7 0.445
4-chamber heart rate (bpm) 66.3 ± 9.8 67.9 ± 11.7 67.1 ± 10.7 0.549
LVDD (mm) 44.8 ± 3.9 45.8 ± 4.7 45.3 ± 4.3 0.330
LVSD (mm) 28.3 ± 3.6 28.8 ± 3.6 28.5 ± 3.6 0.581
E (cm/s) 0.9 ± 0.2 0.7 ± 0.2 0.8 ± 0.2 0.001
A (cm/s) 0.5 ± 0.1 0.7 ± 0.2 0.6 ± 0.2 0.006
E/A 1.8 ± 0.6 1.2 ± 0.5 1.5 ± 0.6 < 0.001
E/e’ 7.8 ± 1.9 9.9 ± 3.8 8.8 ± 3.2 0.006
LVEF(%) 66.8 ± 4.6 66.4 ± 7.3 66.6 ± 6.1 0.792
LVMI(g/m2) 66.7 ± 12.0 91.4 ± 21.6 79.0 ± 21.4 < 0.001
LAD (mm) 30.3 ± 3.4 36.8 ± 5.3 33.5 ± 5.5 < 0.001
LAVI (ml/m2) 24.4 ± 5.9 31.7 ± 11.3 28.1 ± 9.7 0.002
LAVmax (ml) 39.6 ± 10.8 55.7 ± 20.9 47.6 ± 18.4 < 0.001
LAVmin (ml) 15.3 ± 6.1 25.8 ± 15.5 20.6 ± 12.8 < 0.001
LAVpreA (ml) 21.9 ± 7.9 37.3 ± 18.5 29.6 ± 16.1 < 0.001
Active LA emptying fraction (%) 30.1 ± 11.8 31.4 ± 14.4 30.8 ± 13.1 0.695
Passive LA emptying fraction (%) 44.9 ± 10.2 34.3 ± 13.2 39.6 ± 12.9 < 0.001
LV emptying fraction (%) 61.7 ± 8.6 55.2 ± 12.8 58.4 ± 11.3 0.020
LA expansion index(%) 176.0 ± 73.4 140.3 ± 65.8 158.1 ± 71.5 0.045
Stroke 0 1 (3.1) 1 (1.6) 1.000
Coronary heart disease 0 6 (18.8) 6 (9.4) 0.024
Diabetes 0 2 (6.3) 2 (3.1) 0.492
Hyperlipidemia 1 (3.1) 3 (9.4) 4 (6.3) 0.613
Hypertension     < 0.001
No 32 (100.0) 16 (50.0) 48 (75.0)  
Level 1 0 2 (6.3) 2 (3.1)  
Level 2 0 6 (18.8) 6 (9.4)  
Level 3 0 8 (25.0) 8 (12.5)  
  1. LVDD left ventricular end diastolic diameter, LVSD left ventricular end systolic diameter, LVEF left ventricle ejection fraction, LVMI left ventricular mass index, LAD left atrial diameter, LAVI left atrial volume index, LAVmax maximum left atrial volume, LAVmin left atrial minimum volume, LAVpreA left atrial pre-atrial contraction volume