appropriate pressure reduction device / inhaled gas mixture / inspired air/gas mixture / appropriate institutional protocols / arterial blood gas measurements / Steel vacuum / gas cylinders / chemical toxicity / treatment for right ventricular failure / reticulated gas circuits / gas exchange resulting / high pressure gas cylinders / gas remaining / inspired gas oxygen fraction / medical gas / inhaled gas / colourless gas / machinery / supplied pressure-reducing device / gas mixture / delivery systems / oil / compressed gas medical oxygen cylinder / Electrical equipment / compressed medical oxygen gas cylinders / compressed gas medical oxygen system / inhaled air/gas mixture / Clinical protocols / be administered using an appropriate pressure reduction device / /