الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Extubation failure is one of the most frequently encountered events in the management of patients receiving mechanical ventilation. About 20% of such patients require reintubation within 72 hours after extubation. A failed extubation attempt substantially prolongs the duration of mechanical ventilation and ICU stay, and results in increased risk for hospital mortality.The diaphragm, a major muscle of inspiration, plays a crucial role in the pathophysiology of respiratory failure.Chest ultrasound is a beneficial tool for evaluation of the diaphragm during weaning from ventilation in ICU patients. Chest ultrasound offers some advantages over fluoroscopy, including the lack of ionizing radiation and the possibility of use at the bedside of the patient, as well as facilitating direct quantification of the movement of the diaphragm.The aim of this study was to assess the degree of diaphragm thickening and mobility measured by ultrasound during a weaning trial as a predictor of successful weaning.This prospective study was carried out on 30 patients admitted to pulmonology ICU unit in Banha University Hospitals, on invasive mechanical ventilation, during the period between April 2017 and May 2018.