After the prescribed amount of time has elapsed the flow of 100 percent oxygen is stopped and the hood is removed. The chamber is decompressed, or returned to the same pressure that exists outside the chamber, which takes 10 to 15 minutes. The patient then leaves the treatment environment. If a patient is receiving two treatments a day the second treatment follows the first after a 3 to 4 hour break outside the chamber.
A patient receiving one treatment per day will spend about two hours at the treatment facility in either the morning or afternoon. A patient receiving two treatments per day will spend about four hours per day at the facility. The Chico Hyperbaric Center offers treatments Monday through Friday; treatments are not normally scheduled on weekends.