On the ward you will mainly use 4 different delivery devices for oxygen therapy.
Each of these options is suitable for different flow rates and provides a different FiO2 (fraction of inhaled oxygen), so it is important to choose the best device for each patient.
You may also see patients who are on BiPAP, CPAP, Tracheostomies or high flow nasal cannula but you would not be expected to use these as a junior without senior support.
Let's go over each of these options.