Fig. 5From: Ultrasound-assessed diaphragmatic impairment is a predictor of outcomes in patients with acute exacerbation of chronic obstructive pulmonary disease undergoing noninvasive ventilationProbability of fail noninvasive ventilation (NIV) failure (a) and death (b) within the first 48 hours after admission according to the presence (+)/absence (−) of diaphragmatic dysfunction (DD) as assessed by ultrasoundBack to article page