Table 1 Comparison of patients’ characteristics with and without postextubation upper airway obstruction symptoms by sex

Age, years

55 (37-75)

55 (40-69)

.97

53 (39-73)

56.5 (40.25-80.25)

.55

Height, cm

170 (163-174)

170 (165-175)

.40

156 (150-161)

155 (146.5-158)

.16

Reasons of intubation

.32

.90

 Trauma

18 (46%)

57 (54%)

17 (52%)

16 (46%)

 Deterioration of consciousness

9 (23%)

24 (23%)

9 (27%)

12 (34%)

 Pneumonia

0 (0%)

4 (4%)

2 (6%)

1 (3%)

 Sepsis

1 (3%)

5 (5%)

1 (3%)

2 (6%)

 Cardiac arrest

5 (13%)

4 (4%)

3 (9%)

2 (6%)

 Others

6 (15%)

11 (11%)

1 (3%)

2 (6%)

Tube size (inner diameter)

.75

1.00

 6.0 mm

0 (0%)

0 (0%)

0 (0%)

1 (3%)

 6.5 mm

0 (0%)

1 (1%)

4 (12%)

4 (11%)

 7.0 mm

2 (5%)

2 (2%)

23 (36%)

23 (66%)

 7.5 mm

27 (69%)

71* (68%)

6 (18%)

7 (20%)

 8.0 mm

10* (26%)

39 (37%)

0 (0%)

0 (0%)

 8.5 mm

0 (0%)

1 (1%)

0 (0%)

0 (0%)

History of tracheostomy or prolonged intubation

0 (0%)

0 (0%)

-

0 (0%)

1 (3%)

1.00

Number of intubation

.053

.45

 1

31 (79%)

95 (91%)

25 (76%)

30 (86%)

 2

7 (18%)

5 (4%)

5 (15%)

5 (14%)

 ≥ 3

1 (3%)

4 (4%)

2 (6%)

0 (%)

The intubation doctor’s years of experience

.11

.61

 Junior resident: 1-2 years

1 (3%)

3 (3%)

2 (6%)

0 (0%)

 Senior resident: 3-5 years

5 (13%)

29 (28%)

7 (21%)

7 (20%)

 Senior doctor: 6 years and more

32 (82%)

66 (63%)

24 (73%

22 (63%)

 Unknown

1 (3%)

7 (7%)

0 (0%)

6 (17%)

Sedative drugs use at intubation

33 (85%)

89 (85%)

1.00

25 (76%)

26 (74%)

1.00

Neuromuscular blocking agents use at intubation

32 (82%)

82 (78%)

.82

29 (88%)

28 (80%)

.51

Steroids use before extubation

2 (5%)

4 (4%)

.66

6 (18%)

5 (14%)

.75

Absence of cuff-leak before extubation

0 (0%)

2 (2%)

1.00

1 (3%)

0 (0%)

.48

Duration of Intubation, days

4 (3-7)

3 (2-6)

.10

3 (2-9)

4 (2-6)

.81

Unplanned reintubation within 48 hours

1 (3%)

4 (4%)

1.00

2 (6%)

0 (0%)

.23

Hospital mortality

0 (0%)

2 (2%)

1.00

0 (0%)

1 (3%)

1.00