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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.