The accuracy of ultrasound assessment of the thickening fraction of the diaphragm, parasternal intercostal, and abdominal expiratory muscles for predicting weaning outcomes in mechanically ventilated patients. A prospective observational study
Resolution or improvement of the disease leading to MV.
Adequate oxygenation, indicated by arterial oxygen partial pressure to inspired oxygen fraction (PaO2/FiO2) ≥ 200 mmHg, both with positive end-expiratory pressure (PEEP) ≤ 5 cmH2O and rapid shallow breathing index< 105.
Adequate pulmonary function, indicated by a RR<30 breaths/min with VT ≥5 mL/kg ideal body weight (IBW) and no significant respiratory acidosis with normal serum electrolytes.
Stable hemodynamics status, without or with minimal vasopressors
Pregnancy.
Presence of tracheostomy, pleural effusion, pneumothorax, pneumomediastinum, or hemothorax.
Presence of rib fractures.
Pre-existing cervical spinal injury, history or final diagnosis of neuromuscular disorders, and diaphragmatic paralysis or disorders