Hyperbaric Oxygen Therapy for Ulcerative Colitis (HBOT-UC)

"Participants enrolled in the active intervention group receiving HBOT will undergo compression to 2.4 Atmospheres Absolute (ATA; 100% O2) for 90 minutes with two 5-10 minute air breaks (breathing room air at the 2.4 ATA) during the session. This is done once a day for 5 days."

"This control arm will undergo compression to 1.34 ATA for monoplace chambers and 2.4 ATA for multiplace chambers for the full 90-minute session but 21% oxygen instead of 100% oxygen being administered. These participants will also have two 5-10 minute air breaks to mimic the treatment protocol. Multiplace sham sessions will have modified air breaks to avoid decompression sickness. This will happen once a day for 5 days."