Table 2.

Patient parameters measured before extubation

	SBT group (n = 32)	Non-SBT group (n = 32)	P value
Oxygenation index	307.95 ± 36.99	292.73 ± 29.78	0.492
pH	7.42 ± 0.04	7.42 ± 0.04	0.965
PCO2, mm Hg	43.97 ± 7.40	42.75 ± 5.66	0.503
Heart rate, beats/min	82.00 ± 7.41	81.63 ± 9.85	0.080
Body temperature, ºC	36.53 ± 0.56	36.69 ± 0.47	0.219
Systolic pressure, mm Hg	127.41 ± 11.99	126.16 ± 16.31	0.728
Albumin, g/L	30.15 ± 3.01	31.33 ± 2.95	0.118
Hemoglobin, g/L	120.38 ± 12.48	123.25 ± 11.58	0.343

Data are mean ± SD. PCO₂ Pressure of carbon dioxide in arterial blood