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Percentage of asynchrony over the whole breath duration as calculated during Ntr and Ptr NIV: (delay-on + delay-off/neural T tot × 100). Wasted inspiratory efforts were counted as 100% asynchrony. Percentage of asynchrony during Ptr was markedly higher compared to Ntr. Symbols represent group median values and the bars indicate 25th and 75th percentiles. N tr neurally triggered, P tr pneumatically triggered, NIV non-invasive ventilation, PSV pressure support ventilation
