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Introduction: Airway management is often a life-saving procedure for patients. However, during airway management, difficult ventilation and difficult intubation are not always predictable. Preoxygenation, a crucial technique to improve oxygen reserves, plays a vital role in preventing hypoxemia during anesthesia induction. Preoxygenation technology and equipment are not monolithic. With the development of preoxygenation equipment and technology, the effect of preoxygenation has been improved, and it can be applied to different clinical settings.
Evidence Acquisition: We conducted a literature search (PubMed and Scopus) in October 2023 with a starting date of January 1985, repeated in August 2024, to identify relevant articles. Key search terms included: 'preoxygenation,' 'high-flow nasal oxygenation,' 'non-invasive ventilation,' 'obese patients,' 'pediatric patients,' and 'elderly patients.'
Evidence Synthesis: The abstracts of identified articles were assessed for relevance, along with screening of their references for further relevant publications. A full-text review of 219 articles was undertaken, of which 77 were included in the final review.
Conclusions: Preoxygenation is really effective, and different preoxygenation equipment and technology can be applied in different clinical settings to improve the oxygen reserve of patients, thereby ensuring patient safety and improving patient outcome.
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http://dx.doi.org/10.23736/S0375-9393.24.18355-1 | DOI Listing |
Vet Anaesth Analg
August 2025
Department of Anesthesiology and Pain Management, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Buenos Aires, Argentina.
Objective: To evaluate the effect of 5 cmHO positive end-expiratory pressure (PEEP) and end-inspiratory pause (EIP) on airway dead space (V) and its resultant effects on alveolar tidal volume (V) and physiological dead space-to-tidal volume ratio (V/V) in dorsally recumbent anesthetized dogs.
Study Design: Prospective, controlled clinical study.
Animals: Healthy adult dogs (n = 20, > 20 kg) undergoing elective surgery.
Am J Emerg Med
September 2025
University of South Carolina School of Medicine - Greenville, Greenville, SC, USA.
Total laryngectomy (TLE) results in the permanent separation of the respiratory and digestive tracts, requiring all airway interventions to occur exclusively via a neck stoma. Although airway obstruction in post-laryngectomy patients is uncommon, it can rapidly become fatal without prompt recognition and understanding of the altered anatomy. Here, we report the case of a patient with a recent TLE for squamous cell carcinoma, who presented to a rural Emergency Department (ED) in acute respiratory distress.
View Article and Find Full Text PDFZhonghua Jie He He Hu Xi Za Zhi
September 2025
Neuromuscular diseases are often accompanied by various types of sleep-related breathing disorders, which can exacerbate the underlying condition and are associated with a poor prognosis. Early identification is essential, and interventions such as non-invasive ventilation, oxygen therapy, and respiratory rehabilitation should be initiated promptly to mitigate disease progression and improve outcomes. Nevertheless, the rates of missed and misdiagnosed cases remain common in clinical practice.
View Article and Find Full Text PDFWe report a rare case in which the inflation lumen at the tip of an endotracheal tube (ETT) was open, leading to intraoperative air leakage and cuff deflation. A patient with Down syndrome undergoing planned dental treatment under general anesthesia was induced and nasally intubated with a cuffed ETT that was then inflated with 5 mL of air. Soon thereafter, it was noted that the pilot balloon was deflated and filled with water droplets.
View Article and Find Full Text PDFAnesth Prog
September 2025
Objective: We aimed to investigate the differences in the lengths and shapes of several preformed nasotracheal tubes (NTTs) among different manufacturers and compare our findings with a previous report.
Methods: Using reference points at the tube tip, the proximal edge of the cuff, and the flexion point, we measured tube lengths for NTTs with inner diameters of 6.5, 7.