Hyperbaric oxygen therapy is a treatment to increase a person's blood oxygen level, which can prevent tissue death, promote healing, and help fight infection. This treatment involves a person being in an enclosed chamber while 100% oxygen is pumped in at high pressure.

Hyperbaric oxygen therapy may be used to treat conditions such as severe carbon monoxide poisoning, some types of infections, decompression sickness, burns, poorly healing wounds, extreme blood loss, and injuries that cut off oxygen supply to the muscles and other soft tissues.

Large medical centres can often provide hyperbaric oxygen therapy, but it may not be available in smaller hospitals.