When it is time to choose the right oxygen concentrator for you, talk to your doctor about whether pulse dosing or continuous flow oxygen delivery is better for your needs. Based on this difference between pulse dose vs. continuous flow oxygen, it is also important to consider how you would like to use the oxygen: on the go, at home or just for sleep. Pulse dose oxygen concentrators seem to be preferable for doing a number of different things, but continuous flow portable oxygen concentrators may be a sufficient option, particularly if breathing will remain relatively constant.