High flow versus conventional nasal cannula for oxygenation and ventilation maintenance during surgery with intravenous deep sedation by propofol: a randomized controlled study

Table 3 Arterial blood gas analysis between groups (n = 18 in each group)

	Baseline		Post-sedation^a			Post-sedation with oxygen device intervention^b
	NC2 group	NHF group	NC2 group	NHF group	P value	NC2 group	NHF group	P value
PaO₂	78.81 ± 16.88	79.37 ± 12.87	63.14 ± 14.75	62.56 ± 25.12	0.934	110.16 ± 52.77	109.32 ± 28.67	0.954
SaO₂	95.78 ± 1.93	96.49 ± 2.61	90.54 ± 5.88	87.45 ± 12.24	0.344	95.97 ± 3.72	97.34 ± 2.51	0.205
pH	7.45 ± 0.03	7.42 ± 0.07	7.41 ± 0.06	7.4 ± 0.06	0.394	7.38 ± 0.04	7.38 ± 0.05	0.705
PaCO₂	38.15 ± 3.25	40.34 ± 4.13	42.48 ± 3.67	44.84 ± 4.79	0.107	45.35 ± 5.69	46.18 ± 5.56	0.660
PaO₂/FiO₂	368.85 ± 84.5	372.08 ± 63.41	296.15 ± 71.07	293.21 ± 119.85	0.929	379.34 ± 183.11	385.71 ± 105.43	0.899

Data are mean ± standard deviation (SD)
Abbreviations: NHF Nasal high flow, NC2 Conventional nasal cannula, PaCO₂ Partial pressure of carbon dioxide in arterial blood, PaO₂ Partial pressure of oxygen in arterial blood, SaO₂ Oxygen saturation in arterial blood, FiO₂ Fraction of inspired oxygen, FiO₂ Fraction of inspired oxygen
^aBlood collection 15 min after propofol infusion and before application of nasal conventional or NHF cannula
^bAfter application of NC2 or NHF

ISSN: 1471-2253