PeerJ (Aug 2024)

Preoperative bedside test indicators as predictors of difficult video laryngoscopy in obese patients: a prospective observational study

  • Liumei Li,
  • Guanyu Yang,
  • ShiYing Li,
  • Xue Liu,
  • Ya Fei Zhu,
  • Qinjun Chu

DOI
https://doi.org/10.7717/peerj.17838
Journal volume & issue
Vol. 12
p. e17838

Abstract

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Purpose The aim of this study was to identify factors associated with difficult video laryngoscopy in obese patients. Methods A total of 579 obese patients undergoing elective laparoscopic weight loss surgery were intubated with a single-lumen endotracheal tube using a video laryngoscopy under general anesthesia, and the patients were divided into two groups based on the Cormack-Lehane classification (difficult video laryngoscopy defined as ≥ 3): the easy video laryngoscopy group and the difficult video laryngoscopy group. Record the general condition of the patient, bedside testing indicators related to the airway, Cormack-Lehane classification during intubation, and intubation failure rate. Results The findings of this study show that the incidence of difficult video laryngoscopy in obese patients is 4.8%. Multivariate logistic regression analysis indicated that body mass index was significantly associated with difficult video laryngoscopy (OR = 1.082, 95% CI [1.033–1.132], P < 0.001). Conclusion For Chinese obese patients without known difficult airways, the incidence of difficult video laryngoscopy is 4.8%. Body mass index is associated factors for the occurrence of difficult video laryngoscopy, with an increased risk observed as body mass index rise.

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