Self-Extubation Revisited: A Case-Control Study.

Area of Science:

• Critical Care Medicine
• Respiratory Therapy
• Patient Safety

Background:

• Self-extubation is a significant concern in intensive care units (ICUs).
• Understanding its incidence and associated risk factors is crucial for improving patient care.
• Previous research has explored various contributing factors to self-extubation events.

Purpose of the Study:

• To determine the rate of self-extubation in a medical ICU.
• To identify risk factors associated with self-extubation.
• To identify risk factors for re-intubation after self-extubation.

Main Methods:

• Prospective identification of self-extubation events in mechanically ventilated patients.
• Retrospective collection of patient characteristics including Richmond Agitation Severity Scale (RASS) scores, intubation reasons, and endotracheal tube (ETT) tip distance to carina.
• Selection of control subjects from the mechanical ventilation database for comparison.

Main Results:

• A self-extubation rate of 1.3 per 100 mechanical ventilation days was observed.
• Patients who self-extubated had higher RASS scores, longer ETT tip-to-carina distance, and shorter duration of ventilation.
• Hypoxic respiratory failure and nocturnal self-extubation were predictors of re-intubation, which did not increase mortality.

Conclusions:

• Clinicians should be vigilant for self-extubation risk in agitated patients within the first 2 days of mechanical ventilation.
• A longer endotracheal tube to carina distance on chest radiograph is a significant risk factor.
• Reduced sedative use necessitates increased monitoring for self-extubation events.