Skip to main content

Table 1 Baseline characteristics of the study population as a whole and according to the presence/absence of diaphragmatic dysfunction

From: Ultrasound-assessed diaphragmatic impairment is a predictor of outcomes in patients with acute exacerbation of chronic obstructive pulmonary disease undergoing noninvasive ventilation

  

Diaphragmatic function

 

Feature

Overall

DD+

DD−

p Value

Patients

75 (100%)

24 (32%)

51 (68%)

 

Age, years

78 (71–86)

77 (71–86)

78 (76–83)

n.s. (0.61)

Male sex

38 (51%)

15 (63%)

23 (45%)

n.s. (0.21)

Pneumonia

39 (52%)

14 (58%)

25 (50%)

n.s. (0.45)

Sepsis

23 (31%)

10 (42%)

13 (25%)

n.s. (0.1)

Diabetes

31 (41%)

10 (42%)

21 (41%)

n.s. (0.81)

Use of steroids

45 (46%)

17 (71%)

17 (33%)

0.005

FEV1

47% (30–65)

43% (27–61)

49% (32–67)

n.s. (0.65)

Kelly scale score

3.4 (2.4–4.1)

3.7 (2.9–4.3)

3.2 (2.5–3.7)

n.s. (0.34)

APACHE II score

22 (16–29)

25 (18–32)

20 (16–23)

n.s. (0.09)

SAPS II

43 (35–53)

47 (40–55)

41 (33–50)

n.s. (0.28)

PaO2/FiO2

166 (121–198)

165 (109–196)

168 (135–188)

n.s. (0.86)

pH

7.24 (7.2–7.3)

7.24 (7.21–7.29)

7.25 (7.19–7.36)

n.s. (0.32)

PaCO2, mmHg

91 (77–100)

91 (77–98)

90 (80–102)

n.s. (0.82)

Blood lactate, mg/dl

10 (5–12)

11 (4–12)

9 (5–10)

n.s. (0.72)

Respiratory rate, breaths/min

31 (29–35)

34 (30–36)

30 (28–35)

n.s. (0.07)

  1. Abbreviations: DD Diaphragmatic dysfunction, FEV 1 Forced expiratory volume in 1 second, APACHE II Acute Physiology and Chronic Health Evaluation II, SAPS II Simplified Acute Physiology Score II, PaO 2 /FiO 2 Ratio of partial pressure of arterial oxygen to fraction of inspired oxygen, PaCO 2 Partial pressure of arterial carbon dioxide
  2. Data are presented as number and percent for dichotomous values or mean and IQR for continuous values