The HEROES Trial: Hyperbaric Oxygen Therapy for Endometriosis-Related Pain

Participants in the intervention group will be triaged to the closest hyperbaric facility to their address and treated with 40 HBOTs (2 ATM for 90 mins, scheduled daily from Monday to Friday). As HBOT is not a service currently offered at Sunnybrook Hospital, all HBOT treatments will be provided at three collaborating outpatient facilities, Halton Hyperbaric Unit, Restore Hyperbaric Oxygen \& Medical Centre (CPSO-certified Level-II OHP), and Rouge Valley Hyperbaric Medical Centre. All three facilities have the exact same hyperbaric chambers, run by anesthesiologists with advanced training, thus treatments will be identical at all sites.