ventilator weaning
The gradual process of reducing mechanical ventilatory support to assess a patient's ability to breathe independently.
Full Definition
Ventilator weaning is the systematic reduction of mechanical ventilation support to determine if a patient can maintain adequate spontaneous ventilation. The process involves daily spontaneous breathing trials, assessment of weaning parameters (respiratory rate, tidal volume, negative inspiratory force), and evaluation of underlying conditions. Successful weaning requires adequate oxygenation, stable hemodynamics, resolution of the underlying illness, and adequate mental status. Failed weaning attempts can lead to respiratory muscle fatigue and prolonged mechanical ventilation.
Usage
Usage note: Weaning refers to the process; extubation is the physical removal of the endotracheal tube after successful weaning.
In Context
- "Begin ventilator weaning protocol with daily spontaneous breathing trial." — Respiratory therapy order
- "Patient failed weaning attempt due to excessive accessory muscle use." — ICU progress note