Am. J. Respir. Crit. Care Med., Volume 157, Number 4, April 1998, 1131-1137

Unplanned Extubations in the Adult Intensive Care Unit
A Prospective Multicenter Study

THIERRY BOULAIN and the Association des Réanimateurs du Centre-Ouest

Service de Réanimation Médicale, Centre Hospitalier Universitaire Bretonneau, Tours, France

The predisposing factors and complications of unplanned extubation (UEX) in mechanically ventilated adult patients are not well recognized. We designed a prospective multicenter observational study to identify risk factors and describe the complications of UEX. We followed 426 ventilated patients over a 2-mo period. Clinical characteristics such as diagnosis on admission and reasons for ventilation were used to classify the patients. The presence or absence of potential risk factors was daily noted, including the types of ventilators, tracheal tubes, tube fixations, ventilatory support modes, route for intubation, and the use of intravenous sedation. Circumstances and complications of UEX were prospectively recorded. Forty-six (10.8%) patients experienced at least one episode of UEX. Ten UEX occurred during nursing procedures. At the moment of UEX, 61% of patients were agitated. The rates of mortality, laryngeal complications, nosocomial pneumonia after extubation, and the length of mechanical ventilation were similar in UEX and non-UEX patients. Patients were more often reintubated after UEX (28 of 46) than after planned extubation (28 of 284). All the non-reintubated UEX patients survived. One death occurred as a direct consequence of UEX. By use of multivariate analysis, we identified four factors contributing to UEX: chronic respiratory failure, endotracheal tube fixation with only thin adhesive tape, orotracheal intubation, and the lack of intravenous sedation. Considering these factors, we hypothesized that simple measures should be adopted to minimize the incidence of UEX and its related complications: more vigilance during procedures at patients' bedsides, adequate sedation of agitated patients, strong fixation of the tracheal tube, particular attention paid to orally intubated patients, and daily reassessment of the possibility of weaning from the ventilator.

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