Prospective analysis included patients, 18 years or older, scheduled for 60 daily HBOT
sessions between 2016-2018. Each session was 90 min of 100% oxygen at 2 ATA with 5 minutes
air breaks every 20 min, five days per week. Pulmonary functions,measured at baseline and
after HBOT,included forced vital capacity (FVC), forced expiratory volume in one second
(FEV1), peak expiratory flow rate (PEF).