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Table 2 Echocardiographic parameters of all patients and the comparisons between patients with and without left atrial enlargement

From: Left atrial volume as an independent predictor of exercise capacity in patients with isolated diastolic dysfunction presented with exertional dyspnea

Variables Total (n = 111) LAVI < 29 ml/m2(n = 52) LAVI ≥ 29 ml/m2(n = 59) P-value
LVDD (mm) 48.2 ± 4.8 47.1 ± 3.7 49.1 ± 5.4 0.026
LVSD (mm) 27.9 ± 5.3 27.7 ± 4.3 28.0 ± 6.0 0.814
IVSd (mm) 10.9 ± 2.6 10.3 ± 2.4 11.4 ± 2.7 0.025
LVEDV (ml) 68.8 ± 16.6 65.0 ± 13.9 72.1 ± 18.1 0.023
LVESV (ml) 20.2 ± 8.0 19.4 ± 7.5 20.8 ± 8.4 0.380
LV ejection fraction (%) 71.1 ± 5.8 70.7 ± 5.1 71.5 ± 6.4 0.450
LV mass index (g/m2) 110.2 ± 40.1 96.0 ± 22.1 123.0 ± 47.8 < 0.001
LA diameter (mm) 43.0 ± 6.1 39.6 ± 5.0 46.1 ± 5.3 < 0.001
E (cm/sec) 79.4 ± 23.7 76.1 ± 21.0 82.3 ± 25.8 0.168
A (cm/sec) 84.8 ± 23.5 80.5 ± 21.8 88.6 ± 24.4 0.068
E/A ratio 1.0 ± 0.4 1.0 ± 0.4 0.9 ± 0.3 0.549
DT (ms) 201.3 ± 40.7 197.7 ± 29.6 204.6 ± 48.6 0.364
S’ (cm/sec) 7.0 ± 1.3 7.2 ± 1.4 6.9 ± 1.3 0.136
E' (cm/sec) 6.1 ± 1.6 6.4 ± 1.7 5.8 ± 1.3 0.033
E/E’ratio 13.6 ± 4.6 12.1 ± 3.0 14.9 ± 5.4 0.001
Diastolic dysfunction     
- Abnormal relaxation 72 (64.9) 32 (61.5) 40 (67.8) 0.491
- Pseudonormalization 39 (35.1) 20 (38.5) 19 (32.2)  
  1. Data are expressed as number (percentage) or mean ± standard deviation.
  2. P values are for comparisons between 2 groups.
  3. A = peak late diastolic velocity of mitral inflow; DT = deceleration time; E = peak early diastolic velocity of mitral inflow; E’ = tissue Doppler peak early diastolic velocity of medial mitral annulus; IVSd = interventricular septum wall thickness during diastole; LA = left atrium; LAVI = left atrial volume index; LV = left ventricle; LVDD = left ventricular end-diastolic diameter; LVSD = left ventricular end-systolic diameter; LVEDV = left ventricular end-diastolic volume; LVESV = left ventricular end-systolic volume; S’ = tissue Doppler peak systolic velocity of medial mitral annulus.