Comparison of Oxygen Saturation Between Nasal High-Flow Oxygen and Conventional Nasal Cannula in Obese Patients Undergoing Dental Procedures With Deep Sedation: A Randomized Crossover Trial

Purpose In anesthetic management, it is widely accepted that obese patients are more likely to suffer airway obstructions and reductions in arterial oxygen saturation (SpO2). Therefore, important take special measures prevent desaturation during the deep sedation of patients. This clinical study examined whether use nasal high-flow systems (NHFS) keep higher SpO2 reduced hypoxemia than conventional cannula with intellectual disabilities for dental treatment. Materials Methods Eighteen (body mass index: >25) who underwent were enrolled. each case, was induced using propofol maintained at a bispectral index 50 70. The subjects randomly assigned control administration (5 L/min via cannula) or NHFS (40% O2, 40 L/min, 37 °C) arm alternate shifts as crossover trial. primary endpoint minimum value, incidence treatment also evaluated. Results mean value significantly (95.8 ± 2.1 % vs 93.6 4.1 %, P = 0.0052, 95% confidence interval: 0.608-3.947). Hypoxemic episodes (SpO2: ≤94%) occurred 3 cases (16.7%) 11 (61.1%) (P 0.0076, odds ratio: 0.127, interval 0.0324 - 0.630). Conclusion resulted