Weaning failure from mechanical ventilation [Mekanik ventilasyondan ayi{dotless}rmadaki (weaning) yetersizlik]

Mechanical ventilation (mv) is a life-supporting modality that is used in a signifi cant proportion of patients in icus. the discontinuation or withdrawal process from mv is an important clinical issue. it has been estimated that as much as 42% of the time that a medical patient spends on a mechanical ventilator is during the discontinuation process. about 70% to 80% of patients who require mv for respiratory failure will be extubated after a trial of spontaneous breathing once the precipitating process has been corrected. it was found that approximately 15% of patients failed an initial attempt of weaning from mechanical ventilation. prolonged mv is associated with a host of complications (eg,infection,gastrointestinal bleeding,and deep venous thrombosis). under these circumstances,the clinical focus should include a search for all of the possible reasons that may explain the ventilator dependency.