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Associations With Extubation Failure and Predictive Value of Risk Analytics Algorithms With Extubation Readiness

Daniel L Hames1,2, Lynn A Sleeper2,3, Kevin J Bullock4

  • 1Division of Cardiovascular Critical Care, Department of Cardiology, Boston Children's Hospital, Boston, MA.

Pediatric Critical Care Medicine : a Journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies
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Extubation failure in pediatric cardiac surgery patients is linked to younger age, male sex, complex procedures, and preoperative respiratory support. Current readiness tests lack sensitivity, and new indices require further study.

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Area of Science:

  • Pediatric Cardiac Surgery
  • Critical Care Medicine
  • Respiratory Physiology

Background:

  • Extubation failure post-cardiac surgery in children is a significant concern, linked to increased morbidity and mortality.
  • Existing extubation readiness tests (ERT) may not adequately assess non-respiratory support needs in pediatric congenital heart disease patients on mechanical ventilation (MV).

Purpose of the Study:

  • To identify factors associated with extubation failure in children after cardiac surgery.
  • To evaluate the performance of risk analytics algorithms, including the inadequate delivery of oxygen (IDO2) index, in predicting extubation failure.

Main Methods:

  • Retrospective cohort study of children receiving MV >48 hours post-cardiac surgery.
  • Analysis of 650 encounters to identify predictors of reintubation.
  • Assessment of institutional ERT performance and the impact of adding the IDO2 index.

Main Results:

  • Extubation failure (reintubation) occurred in 8% of cases, most frequently within 6 hours.
  • Younger age, male sex, STS-ECATS category 5 procedures, and preoperative respiratory support were independent predictors of reintubation.
  • The institutional ERT showed low sensitivity (23.8%); adding the IDO2 index improved sensitivity but reduced overall accuracy.

Conclusions:

  • Preoperative respiratory support, younger age, and complex operations are associated with extubation failure.
  • The inadequate delivery of oxygen (IDO2) index offers unique monitoring parameters but needs further investigation for clinical use in extubation readiness assessments.