Utility of oxygen insufflation through working channel during fiberoptic intubation in apneic patients: a prospective randomized controlled study

BMC Anesthesiology

Joon Gwon Kang¹  Jung Youn Han¹  Go Un Roh¹  Chul Ho Chang² 

[1] Department of Anesthesiology and Pain Medicine, CHA Bundang Medical Center, CHA University School of Medicine, 59 Yatap-ro, Bundang-gu, 13496, Seongnami-si, Gyeonggi-do, Korea;Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Gangnam Severance Hospital, 211 Eonju-ro, Gangnam-gu, 06273, Seoul, Korea;

关键词: Fiberoptic intubation;    Apneic oxygenation;    Oxygenation during intubation;   

DOI  :  10.1186/s12871-020-01201-9

来源: Springer

【 摘 要 】

BackgroundAirway management is a part of routine anesthetic procedures; however, serious complications, including hypoxia and death, are known to occur in cases of difficult airways. Therefore, alternative techniques such as fiberoptic bronchoscope-assisted intubation (FOB intubation) should be considered, although this method requires more time and offers a limited visual field than does intubation with a direct laryngoscope. Oxygen insufflation through the working channel during FOB intubation could minimize the risk of desaturation and improve the visual field. Therefore, the aim of this prospective randomized controlled study was to evaluate the utility and safety of oxygen insufflation through the working channel during FOB intubation in apneic patients.MethodsThirty-six patients were randomly allocated to an N group (no oxygen insufflation) or an O group (oxygen insufflation). After preoxygenation, FOB intubation was performed with (O group) or without (N group) oxygen insufflation in apneic patients. The primary outcome was the velocity of decrease in the partial pressure of oxygen (PaO2) during FOB intubation (VPaO2, mmHg/sec) defined as the difference of PaO2 before and after intubation divided by the time to intubation. The secondary outcomes included the success rate for FOB intubation, time to intubation, visual field during FOB intubation, findings of arterial blood gas analysis, and occurrence of FOB intubation-related complications.ResultsWe found that VPaO2 was significantly greater in the N group than in the O group (1.0 ± 0.4 vs. 0.4 ± 0.4; p < 0.001), while the visual field was similar between groups. There were no significant intergroup differences in the secondary outcomes.ConclusionsThese findings suggest that oxygen insufflation through the working channel during FOB intubation aids in extending the apneic window during the procedure.Trial registrationClinicalTrials.gov, NCT02625194, registered at December 9, 2015.

【 授权许可】

CC BY