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Table 1 Characteristics of population (n = 52)

From: Patient–ventilator asynchrony during conventional mechanical ventilation in children

 

Total

n = 52

Peak Edi < 2 µV

n = 18

Peak Edi > 2 µV

n = 34

Age (months)

10 (2–42)

21 (1–135)

6 (2–29)

Weight (kg)

6.5 (4.3–17.4)

11 (4.8–38.4)

5.3 (4.0–12.0)

Male, n (%)

31 (60%)

11 (61%)

20 (59%)

Days between admission and inclusion

4 (1–10)

3 (1–7)

4 (1–10)

Days between MV initiation and inclusion

3 (1–7)

2 (1–6)

4 (2–7)

Main reasons for PICU admission, n (%)

 Respiratory failure

31 (60%)

5 (28%)

26 (76%)*

 Including bronchiolitis

11 (21%)

1 (6%)

10 (29%)

 Hemodynamic failure

3 (6%)

2 (11%)

1 (3%)

 Neurologic disorder

9 (17%)

6 (33%)

3 (9%)

 Metabolic disorder

2 (4%)

0 (0%)

2 (6%)

 Trauma

2 (4%)

2 (11%)

0 (0%)

 Postoperative admission

5 (10%)

3 (17%)

2 (6%)

Chronic condition, n (%)

 Respiratory disease

8 (15%)

2 (11%)

6 (18%)

 Cardiac disease

9 (17%)

3 (17%)

6 (18%)

 Neurological disease

11 (21%)

4 (22%)

7 (21%)

 Immuno-oncologic disease

3 (6%)

0 (0%)

3 (9%)

Clinical status

 PIM-2 score

1.7 (0.8–4.3)

2.3 (0.9–4.5)

1.6 (0.8–4.4)

 PELOD score

2 (1–1)

1 (1–11)

1 (1–11)

 Set respiratory rate, min−1

25 (20–35)

23 (14–38)

31 (25–42)*

 Measured respiratory rate, min−1

29 (20–36)

20 (15–29)

34 (28–40)*

 pH

7.40 (7.35–7.42)

7.40 (7.36–7.43)

7.39 (7.34–7.43)

 PaCO2, mmHg

46 (42–53)

42 (38–47)

48 (45–57)*

 HCO3 , mmHg

28 (24–32)

27 (23–30)

30 (25–33)

 PEEP, cmH2O

5 (5–6)

5 (5–5)

5 (5–6)

 FiO2

0.35 (0.29–0.41)

0.30 (0.24–0.35)

0.35 (0.30–0.50)

 Comfort score

13 (10–15)

11 (8–13)

15 (12–16)*

 Score sedation

11 (6–21) 

10 (1–14) 

15 (6–25) 

Edi analysis

 Peak inspiratory Edi, µV

3.6 (1.2–7.6)

1.1 (0.6–1.3)

6.6 (3.8–11.5)

 Tonic expiratory Edi, µV

0.7 (0.4–1.9)

0.4 (0.3–0.5)

1.1 (0.7–2.5)

  1. Data are expressed as median (interquartile range) or n (%)
  2. Edi electrical activity of the diaphragm, MV mechanical ventilation, PICU pediatric intensive care unit, PEEP positive end-expiratory pressure
  3. *Significant difference between the two groups (p < 0.05)