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Table 4 Clinical, exercise and echocardiographic parameters of all patients and the comparisons between patients with and without good exercise capacity

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)

Exercise capacity < 7 METs (n = 38)

Exercise capacity ≥ 7 METs (n = 73)

P-value

Age (years)

58.1 ± 9.2

61.7 ± 9.2

56.3 ± 8.7

0.003

Male gender

60 (54.1)

20 (52.6)

40 (54.8)

0.828

BMI (kg/m2)

25.7 ± 3.8

27.1 ± 4.0

24.9 ± 3.4

0.004

Rest HR (beats/min)

70.7 ± 14.4

70.8 ± 15.5

70.7 ± 14.0

0.975

Peak HR (beats/min)

137.2 ± 24.5

127.3 ± 23.2

142.3 ± 23.7

0.002

LVDD (mm)

48.2 ± 4.8

49.0 ± 5.5

47.8 ± 4.4

0.238

LVSD (mm)

27.9 ± 5.3

28.4 ± 6.3

27.6 ± 4.6

0.457

IVSd (mm)

10.9 ± 2.6

11.6 ± 3.1

10.5 ± 2.2

0.053

LVEDV (ml)

68.8 ± 16.6

71.7 ± 19.9

67.2 ± 14.4

0.175

LVESV (ml)

20.2 ± 8.0

21.4 ± 9.5

19.5 ± 7.0

0.220

LV ejection fraction (%)

71.1 ± 5.8

70.8 ± 6.4

71.3 ± 5.5

0.644

LV mass index (g/m2)

110.2 ± 40.1

124.4 ± 55.4

103.1 ± 27.2

0.032

LA diameter (mm)

43.0 ± 6.1

45.8 ± 5.2

41.7 ± 6.0

0.001

E (cm/sec)

79.4 ± 23.7

82.9 ± 24.1

77.6 ± 23.5

0.261

A (cm/sec)

84.8 ± 23.5

93.1 ± 24.7

80.5 ± 21.8

0.006

E/A ratio

1.0 ± 0.4

0.9 ± 0.3

1.0 ± 0.4

0.221

DT (ms)

201.3 ± 40.7

205.5 ± 48.8

199.1 ± 35.9

0.438

S’ (cm/sec)

7.0 ± 1.3

6.8 ± 1.3

7.2 ± 1.3

0.101

E' (cm/sec)

6.1 ± 1.6

5.6 ± 1.2

6.3 ± 1.7

0.007

E/E’ratio

13.6 ± 4.6

15.2 ± 5.5

12.7 ± 3.8

0.006

LAVI (ml/m2)

31.4 ± 10.5

36.3 ± 12.8

28.8 ± 8.0

0.002

  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; BMI = body mass index; DT = deceleration time; E = peak early diastolic velocity of mitral inflow; E’ = tissue Doppler peak early diastolic velocity of medial mitral annulus; HR = heart rate; 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; METs = metabolic equivalents ; S’ = tissue Doppler peak systolic velocity of medial mitral annulus.