Predictors of Difficult Intubation When Using Video Laryngoscopy

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Presentation transcript:

Predictors of Difficult Intubation When Using Video Laryngoscopy in the Intensive Care Unit Raj Joshi1,2, MD, Cameron David Hypes1,2, MD, MPH, Josh Malo2, MD, John W Bloom2, MD, John Sakles1, MD, Jarrod Mosier1,2, MD 1Department of Emergency Medicine, University of Arizona, 2Section of Pulmonary, Critical Care, Allergy and Sleep, Department of Medicine, University of Arizona BACKGROUND Video laryngoscopy (VL) has been shown to improve first attempt success (FAS) and reduce adverse events (AE) when compared to direct laryngoscopy (DL) in the ICU. Despite improved FAS, a significant proportion of intubations with VL require more than 1 attempt. The goal of this study is to identify anatomic characteristics that reduce the likelihood of FAS at intubation when using VL in the ICU. RESULTS 83% (673/809) of all patients were intubated using VL. Univariate analysis identified the following DACs were significant predictors of failed first attempt: blood in the airway (OR 0.48; 95% CI 0.30-0.78), secretions (OR 0.58; 95% CI 0.36-0.94), airway edema (OR 0.33; 95% CI 0.18-0.62), and large tongue (OR 0.55; 95% CI 0.33-0.93). Adjusting for operator specialty and experience, odds of FAS were significantly reduced in the presence of blood in the airway (aOR 0.45; 95% CI 0.28-0.74), limited mouth opening (aOR 0.53; 95% CI 0.30-0.94), large tongue (aOR 0.49; 95% CI 0.29-0.83), and airway edema (aOR 0.32; 95% CI 0.17-0.61). The DACs not found to be significant include: obesity small mandible short neck, cervical immobility face or neck trauma presence of secretions vomit in the airway. MATERIALS AND METHODS Prospective observational study of all patients intubated in the ICU of a university medical center from January 2012 to January 2014. Data relating to patient and operator demographics, device used, difficult airway characteristics (DACs), and outcome of each attempt were analyzed. DACs were analyzed using univariate and adjusted multivariate logistic regression analyses to control for potential confounders. CONCLUSION After controlling for operator specialty and experience, blood in the airway, limited mouth opening, large tongue, and airway edema were significant predictors of a failed first attempt at intubation using VL in the ICU. The physician should account for these DACs when preparing to intubate a patient in the ICU.