ventilator weaning
The gradual process of reducing mechanical ventilatory support to restore spontaneous breathing in ventilator-dependent patients.
Full Definition
Ventilator weaning is a systematic approach to discontinuing mechanical ventilation by progressively reducing ventilatory support while monitoring patient tolerance and respiratory function. The process involves daily assessment of weaning criteria including adequate oxygenation, hemodynamic stability, minimal sedation, and ability to initiate breathing efforts. Common weaning methods include spontaneous breathing trials, pressure support reduction, and SIMV rate reduction. Successful weaning requires careful monitoring for signs of respiratory distress, fatigue, or deterioration. Failed weaning attempts may necessitate rest periods and addressing underlying conditions before retry attempts.
Usage
Usage note: Distinguish from extubation; weaning is the process, extubation is the endpoint.
In Context
- "The weaning protocol was initiated after the patient met all readiness criteria." — Respiratory therapy assessment
- "Ventilator weaning was unsuccessful due to respiratory muscle fatigue." — Weaning trial documentation