Babies and small children sometimes need to use oxygen therapy, for several different reasons. They might need it temporarily if they were born premature, or they might have a medical condition that requires them to use it, either every day or just during certain occurrences.
Since children are much smaller than adults, and their lungs are much smaller and more delicate, they would need a much smaller amount of oxygen at a time. It’s extremely important to always follow a doctor’s instructions for administering oxygen to a small child, and you should never give them any more than what the doctor prescribes. Oxygen should be treated just like any other drug. You would never give a child the same dose of cough medicine that you would need, and oxygen should be treated jus the same.