Clinical usefulness of capnographic monitoring when inserting a feeding tube in critically ill patients: retrospective cohort study

Table 2 Comparisons between the respiratory complication and non-complication groups

	Overall (n = 445)	Respiratory complication group (n = 16)	Non-complication group (n = 429)	P-value
Age (years)	67 (56–75)	69 (53–80)	67 (56–75)	0.669
Gender (male)	294 (66)	15 (94)	279 (65)	0.015
Major reasons for ICU admission
Respiratory failure	209 (47)	9 (56)	200 (47)	0.493
Cardiovascular	72 (16)	3 (19)	69 (16)
Severe sepsis or septic shock	81 (18)	1 (6)	80 (19)
Neurological	49 (11)	1 (6)	48 (11)
Post-operation	17 (4)	1 (6)	16 (4)
Multiple trauma	8 (2)	0 (0)	8 (2)
Other	9 (2)	1 (6)	8 (2)
Use of mechanical ventilator	332 (75)	14 (88)	318 (74)	0.379
Artificial airway	366 (82)	15 (94)	351 (82)	0.326
Endotracheal tube	250 (55)	111 (60)	139 (51)
Tracheal tube	129 (28)	53 (29)	76 (28)
Location
MICU	165 (37)	8 (50)	157 (37)	0.706
SICU	12 (3)	1 (6)	11 (3)
CCU	46 (10)	1 (6)	45 (10)
Cardiac SICU	11 (2)	0 (0)	11 (3)
Oncology MICU	118 (27)	3 (19)	115 (27)
Oncology SICU	93 (21)	3 (19)	90 (21)
GCS	13 (11–15)	14 (12–15)	13 (11–15)	0.915
RASS	0 (−2–1)	1 (−1–1.3)	0 (−2–1)	0.153
Delirium	203 (59)	8 (62)	195 (59)	0.860
Use of sedative drug	207 (47)	10 (63)	197 (46)	0.211
Two-step technique	102 (23)	6 (38)	96 (22)	0.220
Use of capnography	170 (38)	2 (13)	168 (39)	0.035

ICU intensive care unit, MICU medical intensive care unit, SICU surgical intensive care unit, CCU cardiac intensive care unit, GCS Glasgow Coma Scale, RASS Richmond Agitation Sedation Scale

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