TY - CHAP M1 - Book, Section TI - Management of the Difficult Airway A1 - Inozemtsev, Konstantin A1 - Voronov, Gennadiy G. A1 - Nasr, Ned F. A2 - Reichman, Eric F. Y1 - 2018 N1 - T2 - Reichman's Emergency Medicine Procedures, 3e AB - The definition of a difficult airway has remained nebulous despite ongoing international effort due to the complexity and variety of factors constituting this phenomenon. The latest practice guidelines by the American Society of Anesthesiologists (ASA) simply define a difficult airway as an airway that, to a conventionally trained provider, presents a challenge in terms of intubation, ventilation, or both.1 The reported incidence of a difficult airway in the literature varies. Difficult mask ventilation occurs in approximately 2% of cases, with impossible mask ventilation occurring in 0.15% of cases.2,3 Difficult intubation occurs in approximately 5% of cases, with impossible intubation (i.e., failed intubation after multiple attempts at direct laryngoscopy) occurring in 0.3% to 0.5% of cases.4 The incidence of both occurring in combination is very low, at less than 2 in 10,000 intubations.2 SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1159794187 ER -