mechanical ventilator weaning meaning

  • [Medicine]
    Techniques for effecting the transition of the respiratory-failure patient from mechanical ventilation to spontaneous ventilation,while meeting the criteria that tidal volume be above a given threshold (greater than 5 ml/kg),respiratory frequency be below a given count (less than 30 breaths/min),and oxygen partial pressure be above a given threshold (PaO2 greater than 50mm Hg). Weaning studies focus on finding methods to monitor and predict the outcome of mechanical ventilator weaning as well as finding ventilatory support techniques which will facilitate successful weaning. Present methods include intermittent mandatory ventilation,intermittent positive pressure ventilation,and mandatory minute volume ventilation.

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