In the case where a person was exposed to carbon monoxide, hyperbaric oxygen therapy is an effective treatment to reduce the amount of carbon monoxide in the blood and restore the oxygen level to normal. Hyperbaric oxygen therapy can be used to quickly reduce the carbon monoxide level, the symptoms of carbon monoxide poisoning, and the long-term risks including cognitive problems, lasting damage to memory, attention, and concentration. Hyperbaric oxygen therapy also helps reduce the time needed to lower carbon monoxide levels in fetal blood in cases where a pregnant woman was exposed to carbon monoxide. Therefore, it increases the chances of a healthy baby.