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Table 1 Baseline variables

From: Echocardiographic predictors of exercise capacity and mortality in chronic obstructive pulmonary disease

 

GOLD class

 
 

I

II

III

IV

P

N

5

35

41

9

 

Age

73 (62–77)

70 (63–77)

66 (63–74)

67 (65–71)

0.740

Female (%)

3 (60.0)

22 (62.9)

27 (65.9)

2 (22.2)

0.205

Hypertension

1 (20)

13 (40.6)

15 (37.5)

1 (11.1)

0.309

Diabetes

1 (20)

3 (9.1)

1 (2.3)

0 (0)

0.038

Dyslipidemia

1 (20)

10 (30.3)

5 (12.5)

0 (0)

0.015

BMI

29 (23–29)

26 (23–30)

24 (21–26)

24 (17–29)

0.109

FEV1,% of predicted

84.8 (83–86.8)

57.6 (52.9–69.9)

40.1 (36.4–43.4)

25.8 (24.6–27.5)

<0.001

FVC,% of predicted

101 (92.5–109.6)

96.4 (82.8–107.8)

82.6 (71.1–89.1)

52.2 (49–63)

<0.001

FEV1/FVC,%

69 (65–74)

51 (44–60)

41 (35–45)

38 (35–41)

<0.001

IC,% of predicted

98.9 (95.8–121.8)

97.3 (87.7–109.8)

80.4 (65.3–96.4)

65.7 (56.1–67.2)

<0.001

TLC,% of predicted

105.9 (98.3–115.4))

122.7 (105.3–134.8)

126 (111.8–134.4)

128.6 (115.1–135))

0.127

Residual volume,% of predicted

102.9 (101.6–139.2)

155.5 (139.4–185.6)

190 (172–215.4)

241.8 (195.2–252.6)

<0.001

FRCpleth,% of predicted

106.7 (100.5–113.2)

146 (117–170.7)

167.2 (148–179.5)

185.9 (168.7–198.9)

<0.001

TLCO SB,% of predicted

75.1 (66.7–82.7)

52.6 (43.7–67.3)

40.7 (31–49.5)

30.2 (20.8–42.5)

<0.001

IC/TLC

0.40 (0.39–0.46)

0.34 (0.30–0.38)

0.27 (0.22–0.33)

0.22 (0.20–0.23)

<0.001

Hemoglobin g/L

130 (116–147)

137 (129–150)

140 (135–147)

142 (130–154)

0.641

Hemoglobin mmol/L

8.1 (7.2–9.1)

8.5 (8–9.3)

8.7 (8.4–9.1)

8.8 (8.1–9.5)

0.641

DpO2 ml/min/m2

281 (279–294)

326 (290–413)

295 (251–329)

366 (349–391)

0.007

SATrest

95 (95–96)

96 (94–96)

95 (96–96)

93 (91–95)

0.048

SATmin

93 (89–95)

91 (87–93)

88 (86–91)

84 (80–85)

0.001

∆ SAT

2 (1–6)

4 (3–6)

7 (4–9)

9 (7–10)

0.003

6MWD

520 (450–575)

425 (355–510)

380 (310–450)

355 (325–375)

0.009

TR (mmHg)

27.8 (26.0–28.8)

29.1 (25.8–35.0)

33.2 (28.3–41.0)

40.5 (37.4–48.3)

0.001

  1. FVC = forced volume vital capacity; FEV 1  = forced expiratory volume in one second; TLC = total lung capacity; FRC pleth  = functional residual capacity; IC = inspiratory capacity; DLCO SB = Single breath diffusing capacity of the lung for carbon monoxide; IC/TLC = inspiratory capacity to total lung capacity ratio; SAT rest  = Saturation at rest; SAT min  = Minimal saturation during 6MWD; ∆ SAT = SATrest - SATmin; 6MWD = 6 minutes walking distance.
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BMC Cardiovascular Disorders

ISSN: 1471-2261

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