Predictors and outcomes of extubation failures in a pediatric intensive care unit: A retrospective study.

Objectives: This study was aimed at determining the extubation failure (EF) rate in a pediatric intensive care unit (PICU), and assessing the etiology, associated risk factors, and outcomes.

Methods: We conducted a retrospective study on 335 pediatric patients admitted to King Abdulaziz University Hospital between 2018 and 2020, ranging in age from 1 month to 14 years, who required invasive mechanical ventilation (MV) for >24 h. Extubation readiness was determined by the attending pediatric intensive care physician, according to the patients' clinical status and extubation readiness criteria.

Results: In the cohort of 335 patients, 42 experienced issues during extubation (failure rate, 12.5%). Cardiovascular disease (42.9%) was the main primary admission condition in patients with EF. Younger age (median, interquartile range [IQR]: 4, 1.38-36 months) was strongly associated with EF compared with successful extubation (median, IQR: 12, 2-48;  = 0.036), and with a high predicted mortality rate (10.9%;  < 0.001) and Pediatric Risk of Mortality III (PRISM) score (13;  < 0.001). Furthermore, prolonged ICU stay (25.5 days;  < 0.001) and longer MV requirements (4 days;  < 0.001) before extubation in patients with EF were associated with a high mortality rate (∼12%;  < 0.001). Interestingly, dexamethasone administration before extubation significantly alleviated EF risk (28.3%;  < 0.001).

Conclusion: A higher EF rate in younger patients may potentially be associated with longer ICU stays, prolonged MV requirements before extubation, and the primary diagnostic condition. Dexamethasone effectively alleviated EF incidence. Further research with a rigorous evidence-based study design is necessary to substantiate the factors identified as predictors of EF and to develop strategies to avoid EF.