Fig. 5
From: High-flow oxygen therapy in tracheostomized patients at high risk of weaning failure
Trend of the neuro-ventilatory drive, as expressed by the diaphragm electrical activity peak EAdiPEAK, and of work of breathing, as expressed by the inspiratory muscular pressure–time product per breath (PTPmusc/b) and per minute (PTPmusc/min). Other abbreviations: T-HF 1, first period of high-flow tracheostomy cannula oxygen therapy; conventional O2, period of conventional low-flow oxygen therapy with T-piece; T-HF 2, second period of high-flow tracheostomy cannula oxygen therapy