Compare the effect of noninvasive ventilation and tracheotomy in critically ill mechanically ventilated neurosurgical patients: a retrospective observe cohort study

Table 3 Primary and secondary outcomes of patients

Variable	NIV(n = 33)	Tracheotomy(n = 44)	P value
Postoperative pulmonary infection, n(%)	18 (54.5%)	37 (84.1%)	0.005^a
Atelectasis, n (%)	2 (6.1%)	5 (11.4%)	0.692
Mortality in ICU, n(%)	1 (3.0%)	6 (8.0%)	0.228
GCS score at ICU discharge	12.0 (13.0–14.0)	10.0 (8.0–12.0)	< 0.001^b
△GCS score at ICU	4.0 (3.0–5.0)	0.5 (0.0–2.0)	< 0.001^b
Total mechanical ventilation time, hours (Median, IQR)	218.0 (142.0–294.5)	195.0 (127.3–372.3)	0.658
Invasive mechanical ventilation time, hours (Median, IQR)	123.0 (89.5–218.0)	195.0 (127.3–372.3)	0.005
ICU duration, days (Median, IQR)	14.0 (9.0–22.5)	18.0 (13.3–26.8)	0.059
Hospital duration, days (Median, IQR)	22.0 (17.0–29.5)	28.5 (18.25–41.75)	0.151

Data are expressed as the median and interquartile ranges (IQR), or percentages. COPD Chronic Obstructive Pulmonary Disease, APACHE II Acute Physiology and Chronic Health Evaluation; ICU intensive care unit, GCS Glasgow Coma Scale, △GCS score at ICU: GCS score difference between admission and discharge ICU; a: P < 0.05; b: P < 0.001

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