Fig. 1From: Dyspnea and the electromyographic activity of inspiratory muscles during weaning from mechanical ventilationReceiver operating characteristics curve of changes in Dyspnea-Visual Analog Scale (VAS), breathing pattern, blood gas and hemodynamics to detect spontaneous breathing trial failure. Change is expressed as the difference between value at the initiation and end of the spontaneous breathing trial. Dyspnea-VAS Dyspnea-Visual Analog Scale; SaO2 arterial saturation of oxygenBack to article page