Adult Airway Management in The Intensive Care Units and Regular Floors: A Prospective Observational Study in A Tertiary Care Center

Airway management is one of the pivotal roles of anesthesiologists that extends beyond the OR to include ICUs and regular hospital floors. Managing airways outside the OR is inherently complex and challenging. Numerous guidelines for non-OR airway management exist to assist practitioners. The American University of Beirut Medical Center (AUBMC), a tertiary care facility in a lower-to-middle-income country, experienced significant variation in practices concerning non-OR airway management, similar to other institutions. Nearly a decade ago, the quality, accreditation, and risk management department partnered with the Anesthesiology and Pain Management department to implement a care bundle for airway management outside the OR, excluding the Emergency Department (ED). This multidisciplinary approach prompted an assessment of our practices, aiming to compare our success and complication rates with the literature and international benchmarks.

This is a prospective observational study to evaluate the outcomes of endotracheal intubations for critically ill patients in ICUs and on regular floors. Data were prospectively collected by the anesthesia nurse assisting in the procedure or extracted from the electronic record as appropriate.

The sample size was calculated using the estimation of a simple proportion method (https://epitools.ausvet.com.au/oneproportion). Studies have shown a first attempt success rate of 75%. Based on these results, a sample size of 100 patients was calculated, based on an estimated proportion of 70%, a desired precision of estimate of 10%, a confidence level of 95%, and an estimated dropout rate of 20%. However, to improve the power of our study and to allow for subgroup analysis, we elected to enroll 200 patients. All statistical analyses were conducted using IBM-SPSS (version 29, Armonk NY, USA).

Descriptive analysis was performed for patients' demographics and the clinical characteristics of the study participants. Means and standard deviations were computed for continuous variables, and frequencies and percentages were calculated for categorical variables. Simple logistic regression was used to study the correlation between preoperative variables with the first attempt success rate. Also, simple logistic regression was used to study the association between preoperative variables, and the development of hypotension and hypoxemia during intubation. Variables with a P value < 0.25 were included in the multivariable logistic regression analysis. Multivariable logistic regression analysis was performed to identify the independent predictors of first attempt success rate, hypotension and hypoxemia during intubation, while adjusting for other preoperative variables. A P value < 0.05 was considered statistically significant. Multi-collinearity between covariates was assessed using Pearson's Correlation Coefficient. All models' fits were assessed using the Hosmer and Lemeshow test and using the C statistic, which is the area under the receiver operating characteristic curve.