Emergency Department Intubations in Patients With Angioedema: A Report from the National Emergency Airway Registry

Institution of a difficult airway response team for emergency department patients with anticipated or encountered difficult airways: Descriptive analysis of a 5-year experience at an academic teaching hospital

Objectives

This study aimed to describe characteristics and outcomes associated with difficult airway response team (DART) encounters in the emergency department (ED).

Methods

We performed a descriptive analysis of a prospective, single-center database of DART encounters in the ED from April 1, 2016 to March 31, 2021 cross-referenced with retrospective chart review. Adult ED patients ≥18 years old for whom a DART was activated were eligible. We prospectively collected activation characteristics, intubation indications, operator characteristics, and intubation methods used for DART encounters. Retrospective chart review was conducted to obtain patient demographics and outcome variables. Descriptive analyses were computed for all outcomes.

Results

We analyzed 89 DART encounters. No intubation attempts were made prior to DART activation in 52 cases (58.4%). The most common indications for intubation were angioedema (n = 17, 19.1%) or other airway obstruction (n = 15, 16.9%). A definitive airway was established by anesthesiology (n = 46, 51.7%), emergency medicine (n = 25, 28.1%), trauma surgery (n = 9, 10.1%), and ENT (n = 5, 5.6%). The most common method of intubation used to establish a definitive airway was video laryngoscopy with a bougie or D-blade (n = 29, 32.6%) followed by flexible fiberoptic intubation (n = 19, 21.3%). A surgical airway was required in eight encounters (cricothyrotomy [n = 4, 4.5%]; tracheostomy [n = 4, 4.5%]). Cases were managed in the ED (n = 73, 82%), operating room (OR) (n = 10, 11.2%), and intensive care unit (ICU) (n = 1, 1.1%). All patients requiring intubation had an endotracheal or surgical airway established.

Conclusion

Our findings provide important insights regarding ED DART utilization and have implications when considering institution of a DART in the ED.

Association of airway obstruction with first-pass success and intubation-related adverse events in the emergency department: multicenter prospective observational studies

Background

Airway obstruction is a relatively rare but critical condition that requires urgent intervention in the emergency department (ED). The present study aimed to investigate the association of airway obstruction with first-pass success and intubation-related adverse events in the ED.

Methods

We analyzed data from two prospective multicenter observational studies of ED airway management. We included adults (aged ≥18 years) who underwent tracheal intubation for non-trauma indications from 2012 through 2021 (113-month period). Outcome measures were first-pass success and intubation-related adverse events. We constructed a multivariable logistic regression model adjusting for age, sex, modified LEMON score (without airway obstruction), intubation methods, intubation devices, bougie use, intubator's specialty, and ED visit year with accounting for patients clustering within the ED.

Results

Of 7,349 eligible patients, 272 (4%) underwent tracheal intubation for airway obstruction. Overall, 74% of patients had first-pass success and 16% had intubation-related adverse events. The airway obstruction group had a lower first-pass success rate (63% vs. 74%; unadjusted odds ratio [OR], 0.63; 95% CI, 0.49-0.80), compared to the non-airway obstruction group. This association remained significant in the multivariable analysis (adjusted OR 0.60, 95%CI 0.46-0.80). The airway obstruction group also had a significantly higher risk of adverse events (28% vs. 16%; unadjusted OR, 1.93; 95% CI, 1.48-2.56, adjusted OR, 1.70; 95% CI, 1.27-2.29). In the sensitivity analysis using multiple imputation, the results remained consistent with the main results: the airway obstruction group had a significantly lower first-pass success rate (adjusted OR, 0.60; 95% CI, 0.48-0.76).

Conclusion

Based on these multicenter prospective data, airway obstruction was associated with a significantly lower first-pass success rate and a higher intubation-related adverse event rate in the ED.