Selected Lysosomal Enzyme Activities and the Oxidant-antioxidant Balance in Hyperbaric Oxygen Condition.

HBO session includes three 20-minute inhalations of pure oxygen in a hyperbaric chamber utilizing specially fitted face masks for each patient. The session is conducted as follows: 10 minutes compression of up to 2.5 atm (0.25 MPa), inhalation of 100% oxygen for 20 minutes, a 5-minute break in the chamber without the mask (oxygen concentration up to 23%, constant temperature (room) and humidity), again 20 minutes inhalation of 100% oxygen, another 5-minute break (the same condition), the last 20 minutes inhalation of 100% oxygen, and finally a 10-minute decompression. The total duration of the session was 90 minutes.