A comparative study between high-flow nasal oxygen therapy and venturi mask oxygen therapy for postoperative laparoscopic bariatric surgery patients with atelectasis: a randomized clinical trial

Ain-Shams Journal of Anesthesiology

Table 3 Baseline characteristics of the patients participating in the study presented as mean ± SD or frequency (%) as appropriate

Patients data	HFNO₂ group (mean ± SD) (no 55)	VMO₂ group (mean ± SD) (no 55)	p-value
Age (years)	42.33 ± 10.23	33.96 ± 7.32	< 0.001*
Sex (%)
Female	72.7%	61.8%	0.310
Weight (kg)	145.38 ± 26.01	142.13 ± 14.08	0.417
BMI (kg/m²)	53.11 ± 6.99	51.82 ± 5.33	0.278
Duration of surgery (min)	175.64 ± 48.81	175.91 ± 61.75	0.980
LUS score	7.76 ± 4.172	6.84 ± 2.658	0.168
mRAS score	7.76 ± 2.099	7.65 ± 1.766	0.769
PaO₂ at the end of surgery	75.31 ± 12.963	72.35 ± 6.269	0.130
PaO₂/FiO₂ at the end of surgery	358.964 ± 62.669	346.551 ± 29.830	0.188

*p-value < 0.05 means statistically significant and donating statistically significant means