Background: Preoxygenation before endotracheal intubation (ETI) maintains asphyxiated oxygenation and reduces the risk of hypoxia-induced adverse events. Previous studies have compared various preoxygenation methods. However, network meta-analyses (NMAs) of the combined comparison of preoxygenation methods is still lacking.
Methods: We searched for studies published in PubMed, Embase, Web of Science, Scopus, and the Cochrane Library. Review Manager version 5.3 was used to evaluate the risk of bias. The primary outcome of this meta-analysis was low oxygen saturation (SpO) during ETI. The secondary outcomes included SpO <80%, SpO <90%, and apnea time during ETI. NMA was performed using R 4.1.2 software gemtc packages in RStudio.
Results: A total of 15 randomized controlled trials were included in this study. Regarding the lowest SpO, the noninvasive ventilation (NIV) with high-flow nasal cannula (HFNC) group performed better than the other groups. For SpO <80%, the NIV group (0.8603467) performed better than the HFNC (0.1373533) and conventional oxygen therapy (COT, 0.0023) groups, according to the surface under the cumulative ranking curve results. For SpO <90%, the NIV group (0.60932667) performed better than the HFNC (0.37888667) and COT (0.01178667) groups. With regard to apnea time, the HFNC group was superior to the COT group (mean difference: -50.05; 95% confidence interval: -90.01, -10.09; = 0.01).
Conclusion: Network analysis revealed that NIV for preoxygenation achieved higher SpO levels than HFNC and COT and offered a more significant advantage in maintaining patient oxygenation during ETI. Patients experienced a longer apnea time after HFNC preoxygenation. The combination of NIV with HFNC proved to be significantly superior to other methods. Given the scarcity of such studies, further research is needed to evaluate its effectiveness.
Systematic Review Registration: identifier CRD42022346013.
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http://dx.doi.org/10.3389/fmed.2024.1379369 | DOI Listing |
PLoS One
January 2025
Department of Anesthesiology, The Second Affiliated Hospital, The Army Military Medical University, Chongqing, China.
Background: Rapid sequence induction intubation (RSII) is commonly used in emergency surgeries for patients at high risk of aspiration. However, these patients are more susceptible to hypoxemia during the RSII process. High-flow nasal cannula (HFNC) oxygen therapy has emerged as a potential alternative to traditional face mask (FM) ventilation pre- and apneic oxygenation.
View Article and Find Full Text PDFPrehosp Emerg Care
January 2025
Emergency Medicine, Methodist Dallas Medical Center, Dallas, Texas.
Non-invasive ventilation has been used as a pre-oxygenation strategy for rapid sequence intubation in the emergency department and the intensive care unit, yet, limited research has examined its use in the transport setting. These case reports discuss the use of non-invasive ventilation via a Hamilton T1 ventilator (Hamilton Medical) during transport by an air medical crew for pre-oxygenation before intubation in two cases. In both cases, a non-invasive, bilevel-positive airway pressure mode with a backup rate was used to achieve adequate airway pressures while allowing for a two-handed seal by one EMS clinician as the other prepared the equipment and medications.
View Article and Find Full Text PDFBMC Anesthesiol
January 2025
Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, University Hospitals of Geneva, Geneva, 1205, Switzerland.
Background: In resource-limited settings, advanced airway management tools like fiberoptic bronchoscopes are often unavailable, creating challenges for managing difficult airways. We present the case of a 25-year-old male with post-burn contractures of the face, neck, and thorax in Nigeria, who had been repeatedly denied surgery due to the high risk of airway management complications. This case highlights how an awake intubation was safely performed using an Airtraq laryngoscope, the only device available, as fiberoptic intubation was not an option.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, P. R. China.
Owing to massive production and poor end-of-life management, plastic waste pollution has become one of the most pressing environmental crises. In response to the mounting crisis, the past several decades have witnessed the development of numerous methods and technologies for plastic recycling. However, most of the current recycling technologies often produce low-quality or low-value products, making it difficult to recover the operating costs.
View Article and Find Full Text PDFBest Pract Res Clin Anaesthesiol
September 2024
K. Bicetre School of Medicine, Paris-Saclay University, Département d'Anesthésie, Hôpital Antoine Béclère - APHP.Université Paris-Saclay, 157 rue de la porte de Trivaux, 92140, CLAMART, France. Electronic address:
This article offers a comprehensive clinical update on best practices for neuraxial and general anesthesia in cesarean delivery, the most frequently performed major surgical procedure globally. Current evidence-based strategies to address common anesthetic challenges, such as maternal hypotension and intraoperative breakthrough pain, are discussed in detail. Practical approaches for optimizing maternal hemodynamic stability, including the use of vasopressors, fluid management and maternal positioning, are reviewed.
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