Fig. 5From: Physiological effects of high-intensity versus low-intensity noninvasive positive pressure ventilation in patients with acute exacerbation of chronic obstructive pulmonary disease: a randomised controlled triala Ineffective efforts, b auto-triggering, c double-triggering, d premature cycling, e delayed cycling, and f the asynchrony index within 24Â h after randomisation. Values are individuals, medians, and interquartile ranges. NPPV noninvasive positive pressure ventilation.Back to article page