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• W4380450119 abstract "<h3>BACKGROUND:</h3> Automated oxygen titration to maintain a stable S_pO₂ has been developed for spontaneously breathing patients but has not been evaluated during CPAP and noninvasive ventilation (NIV). <h3>METHODS:</h3> We performed a randomized controlled crossover, double-blind study on 10 healthy subjects with induced hypoxemia during 3 situations: spontaneous breathing with oxygen support, CPAP (5 cm H₂O), and NIV (7/3 cm H₂O). We conducted in random order 3 dynamic hypoxic challenges of 5 min (F_IO₂ 0.08 ± 0.02, 0.11± 0.02, and 0.14 ± 0.02). For each condition, we compared automated oxygen titration and manual oxygen titration by experienced respiratory therapists (RTs), with the aim to maintain the S_pO₂ at 94 ± 2%. In addition, we included 2 subjects hospitalized for exacerbation of COPD under NIV and a subject managed after bariatric surgery with CPAP and automated oxygen titration. <h3>RESULTS:</h3> The percentage of time in the S_pO₂ target was higher with automated compared with manual oxygen titration for all conditions, on average 59.6 ± 22.8% compared to 44.3 ± 23.9% (<i>P</i> = .004). Hyperoxemia (S_pO₂ > 96%) was less frequent with automated titration for each mode of oxygen administration (24.0 ± 24.4% vs 39.1 ± 25.3%, <i>P</i> < .001). During the manual titration periods, the RT made several changes to oxygen flow (5.1 ± 3.3 interventions that lasted 122 ± 70 s/period) compared to none during the automated titration to maintain oxygenation in the targeted S_pO₂. Time in the S_pO₂ target was higher with stable hospitalized subjects in comparison with healthy subjects under dynamic-induced hypoxemia. <h3>CONCLUSIONS:</h3> In this proof-of-concept study, automated oxygen titration was used during CPAP and NIV. The performances to maintain the S_pO₂ target were significantly better compared to manual oxygen titration in the setting of this study protocol. This technology may allow decreasing the number of manual interventions for oxygen titration during CPAP and NIV." @default.
• W4380450119 created "2023-06-14" @default.
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• W4380450119 date "2023-06-13" @default.
• W4380450119 modified "2023-09-25" @default.
• W4380450119 title "Automated Oxygen Titration During CPAP and Noninvasive Ventilation in Healthy Subjects With Induced Hypoxemia" @default.
• W4380450119 doi "https://doi.org/10.4187/respcare.09866" @default.
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