Table 1

Patient demography, clinical state

Parameter	Detail	Median or n	*IQR or %
Number	(n)	45	–
Age	Years	58	50–73
Sex	Male	25	55.6
BMI	kg/m²	25	22.9–28.9
Height	cm	173.5	165–180
Weight	kg	77.5	65.5–93.8
APACHE 2	Score	13	10–16
Disease	Medical	17	37.8
	Neurosurgical (non-trauma)	9	20
	Surgery (general)	9	20
	Trauma	10	22.2
Consciousness	Awake	15	33.3
Consciousness	Sedated	30	66.7
Artificial airway	None	16	35.6
	ETT	28	62.2
	Tracheostomy	1	2.2

BMI, body mass index; ETT, endotracheal tube.