Oxygen Needs In Infants, Children And Adults?
What is the oxygen demand of infants, children and adults?
Good afternoon, thank you for asking at HealthReplies.com. Although it may seem simple, breathing is a complex process. The breathing mechanism includes ambient air pressure, the integrity of the structure of the airways, adequate levels of red blood cells, muscles, nerves and diaphragms that work in harmony.
Even for the air we breathe ourselves, even though we know that we breathe oxygen, in reality oxygen is not the only content, and not even the most content of the air we breathe. In air, oxygen only has a portion of 20%, precisely 20.95%. The most content is owned by nitrogen with 78.09%, there are also water contents that vary from 0.4% -1%, 0.93% argon, 0.04% carbon dioxide, and other gas content in a much smaller percentage.
Then to further complicate it again, the air that inhabits our lungs has their respective terms. The air we breathe and we release in relaxed conditions is called tidal air, and the volume is around 500 cc per time we breathe, assuming 7cc / kg body weight for adults. There is an 'assumption' that shows that it is not certain that each person has a tidal volume of 500 cc, will depend again on their sex, height and weight. In some studies, some have even included race as a consideration. Of course you can't equate the oxygen needs of short, thin adult men with big tall men who work as wrestlers.
Besides tidal air, there are many other terms, such as inspiration capacity, maximum inspiration volume, maximum expiratory volume, functional residual capacity, residual volume and total lung capacity. And all this is influenced by age, weight, gender, and height.
So regarding your question, the question is still not specific, is it really the oxygen you mean, or the air as a whole. Is it sick or healthy, whether the calculation is per breath or per minute, is it only inhaled air or the entire lung capacity, and of course at what sex, what age, what height, and weight. This is very important, because one study tried to find out about the total lung capacity of children at the age of 6-14 years and from the results of the study were (30.71 x height) + (29.35 x weight) - 2545 for men; and (30 x height) + (31.31 x weight) - 2536 for women. So it is clear that age is very limited. This formula will be different again if the child is under 6 years and above 14 years or is a teenager, and under what conditions the measurement is carried out. Because oxygen can be needed above 90% in people with certain diseases.
Then come back again, make sure what is your goal to ask that. If the goal is science, it would be better for you to read from the beginning about the mechanism or physiology of breathing, or ask your seniors, because there are many factors you must understand to be able to further reduce the scope of your question. Too broad and prone to misunderstanding if we explain at length in this forum.
But if the goal is for daily health or related to a particular disease that is experienced by you, a family member or an acquaintance of you, then you should consult a lung doctor and let it be resolved by experts. Ask what you don't understand about the doctor, because this is important to avoid misunderstanding. So, hopefully answering your question.