Final answer:
This explains the different oxygen delivery devices and their oxygen concentration ranges.
Step-by-step explanation:
1) The nasal cannula delivers oxygen at a rate of 1-6 L/min. If the nasal mucous membranes become dry, water can be added to the system to humidify the oxygen.
2) A rate of 5-10 L/min using a simple mask can deliver oxygen concentrations from 40% to 60%.
3) A non-rebreather mask uses a reservoir to capture exhaled gas for rebreathing and can deliver oxygen concentrations of 50% or greater at a minimum flow rate of 10L/min.
4) A venturi mask has one or both side vents closed to limit the mixing of room air with oxygen. It is used to deliver oxygen concentrations of 70% to 100% at a minimum flow rate of 10L/min.
5) A tracheostomy tube is a small tube surgically placed in the trachea to deliver oxygen for long-term oxygen therapy.
6) A venturi mask is used for patients who require precise percentages of oxygen and is determined by a combination of valves and specified flow rates.