High-flow nasal cannula oxygen therapy during anesthesia recovery for older orthopedic surgery patients: A prospective randomized controlled trial

Table 3 Comparison between the conventional mask group and the high-flow nasal cannula oxygen group after the intervention

	Conventional mask group (n = 30)	HFNCO group (n = 30)	P value
5 min after extubation
HR	76.0 ± 12.8	71.3 ± 11.0	0.138
MAP	108.3 (99.0, 120.5)	105.5 (96.3, 115.1)	0.4731
SpO2	100.0 (97.8, 100.0)	100.0 (100.0, 100.0)	0.0321
15 min after extubation
HR	76.6 ± 12.7	71.4 ± 10.5	0.091
MAP	108.5 (96.0, 121.9)	105.3 (95.9, 118.6)	0.6201
SpO2	100.0 (98.0, 100.0)	100.0 (100.0, 100.0)	0.0011
30 min after extubation
HR	75.9 ± 13.1	70.3 ± 8.8	0.054
MAP	107.5 (97.0, 117.6)	111.0 (100.3, 117.8)	0.6731
SpO2	100.0 (98.8, 100.0)	100.0 (100.0, 100.0)	0.0021
1 h after extubation
HR	76.5 ± 13.6	71.0 ± 9.2	0.073
MAP	105.8 (97.3, 119.1)	107.5 (110.5, 121.0)	0.6471
SpO2	100.0 (99.0, 100.0)	100.0 (100.0, 100.0)	0.0031
pH	7.36 (7.34, 7.38)	7.36 (7.33, 7.37)	0.6521
paCO2	44.0 (40.1, 48.2)	45.3 (41.8, 49.8)	0.7061
paO2	114.0 (83.5, 147.6)	194.9 (162.9, 242.2)	< 0.0011
Glucose	8.3 (6.5 ,8.9)	7.6 (6.5, 8.7)	0.5691
Lactic acid	1.4 (1.1, 1.7)	1.4 (1.1, 1.8)	0.9411

¹Mann-Whitney U test.

Data are presented as mean ± SD and median (interquartile spacing). HFNCO: High-flow nasal cannula oxygen; HR: Heart rate; MAP: Mean arterial pressure; paCO₂: Arterial partial pressure of carbon dioxide; paO₂: Arterial partial pressure of oxygen; SpO₂: Saturation of peripheral oxygen.