Table 6: Other baseline characteristics of each tracheostomy group.

 

No tracheostomy

Elective tracheostomy

Delayed tracheostomy

P value

WHO PS

 0

 1

 2

 3

 

45

47

4

2

 

13

16

5

1

 

9

11

2

1

 

0.419

Pre-operative nutritional support

n (%)

52 (53)

25 (69)

16 (70)

0.128

Peak flow (l/min)

Mean (SD)

n = 78

477.18 (107.73)

n = 26

447.50 (148.04)

n = 16

493.94 (103.20)

0.400

AT-VE/VO2

Mean (SD)

n = 57

32.19 (5.15)

n = 30

33.63 (5.97)

n = 17

31.94 (4.35)

0.387

Operative fluid balance (liter)

Mean (SD)

2.44 (1.23)

2.71 (1.25)

2.30 (1.29)

0.387

Preoperative Hemoglobin (g/l)

 Median (IQR)

130 (120-137)

132 (116-143)

135 (122-144)

0.339

Preoperative Albumin (g/l)

Median (IQR)

40 (24-42)

39 (37-41)

40 (39-42)

0.277

Highest lactate (mmol/l)

Median (IQR)

1.20 (0.9-1.7)

1.30 (1.15-1.95)

1.25 (1.10-1.70)

0.397

WHO PS: World Health Organisation Performance status; n: Number; l/min: Litres per minute; AT- VE/VCO2: Minute ventilation/carbon dioxide production at Anaerobic Threshold; SD: Standard Deviation; IQR: Interquartile Range; g/l: Grams per litre; mmol/l: Millimole per litre.