Fig. 1.
Flow diagram of case inclusion and airway outcome. Among a large cohort of patients requiring tracheal intubation in the Multicentered Perioperative Outcome Group data set, the “primary query” was identified by electronic search that included airway management details of interest. After manual review of these records, the final sample of cases was grouped into common airway management rescue techniques after failed direct laryngoscopy. Each case resulted in one or more attempted rescue techniques. Success rates for these techniques are included. SGA = supraglottic airway.