• Ana Lia Graciano, Robert Tamburro, Ann E Thompson, John Fiadjoe, Vinay M Nadkarni, and Akira Nishisaki.
• Department of Pediatrics, Division of Critical Care Medicine, Children's Hospital Central California, 6235 N Fresno St Ste 103 (OS43), Fresno, 93710, CA, USA.
• Intensive Care Med. 2014 Nov 1; 40 (11): 1659-69.

PurposeTo evaluate the incidence and associated risk factors of difficult tracheal intubations (TI) in pediatric intensive care units (PICUs).MethodsUsing the National Emergency Airway Registry for Children (NEAR4KIDS), TI quality improvement data were prospectively collected for initial TIs in 15 PICUs from July 2010 to December 2011. Difficult pediatric TI was defined as TIs by direct laryngoscopy which failed or required more than two laryngoscopy attempts by fellow/attending-level physician providers.ResultsA total of 1,516 oral TIs were reported with a median age of 2 years. A total of 97% of patients were intubated with direct laryngoscopy. The incidence of difficult TI was 9%. In univariate analysis, patients with difficult TI were younger [median 1 year (0-4) vs. 2 (0-8) years, p = 0.046], and had a reported history of difficult TI (22 vs. 8%, p < 0.001). Multivariate analysis showed that history of difficult airway and signs of upper airway obstruction are significantly associated with difficult TI. The advanced airway provider was more involved as a first provider in difficult TI (81 vs. 58%, p < 0.001). The presence of difficult TI was associated with higher incidence of oxygen desaturation below 80% (48 vs. 15%, p < 0.001), adverse TI associated events (53 vs. 20%, p < 0.001), and severe TI associated events (13 vs. 6%, p = 0.003).ConclusionsDifficult TI was reported in 9% of all TIs and was associated with increased adverse TI events. History of difficult airway and sign of upper airway obstruction were associated with difficult TIs.

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