Today our topic of discussion is Methods of Weaning.
Methods of Weaning
Methods of Weaning
There are two methods of weaning. The conventional method is the episodic ventilator with piece or CPAP. Briggs T piece technique is used. The patient is disconnected from emlator for a specife period of time and allowed to breathe spontaneously using the Briggs T piece or CPAP.
Weaning starts with shorter intervals such as 5-10 minutes every bour or more. The patient requires rest period. Weaning should not be attempted during night until patient can maintain spontaneous breathing. The vital capacity and the inspiratory force along with vital signs and signs of fatigue are monitored closely during the weaning period.
Intermittent mandatory ventilation-weaning: Intermittent mandatory ventilation is a technique by which patients can breathe spontaneously and in addition receive mechanically ventilated breaths at specific preselected rates.
Set rate, interval and keep sensivity at maximum setting. If tolerance is not indicated disease mandatory rate. Record at each weaning interval heart rate, blood pressure and respiratory rate and arterial blood gas and pulse oxygenation while IMV is used.
The spontaneous rate should not exceed 30 breaths/minutes as these results in fatigue, CO, retention and respiratory acidosis. Rates greater than 30 indicate a need to reduce weaning time.
Weaning can continue as long as patient’s condition is stable and arterial PH is 7.32-7.35. Patient is positioned m sitting or Fowler’s position during weaning. All respiratory and other parameters are monitored. Patient is supported emotionally during weaning process.
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