What Researchers Did
Researchers investigated how hyperbaric oxygen therapy (HBO2) affects markers of lung oxygen toxicity, specifically exhaled nitric oxide (FENO), exhaled breath condensate (EBC) pH, and hydrogen peroxide (H2O2).
What They Found
They found that FENO decreased significantly by 33.1% (SD = 7.8) on Day 1 and 40.7% (SD = 8.9) on Day 25 immediately after HBO2 exposure. EBC pH was reduced only after the first exposure. Importantly, baseline levels of FENO, EBC pH, and H2O2 did not change over the four-week treatment period, suggesting repeated HBO2 exposures did not cause ongoing lung inflammation.
Canadian Relevance
No direct Canadian connection identified.
Study Limitations
The study involved a small number of participants (eight patients and eight control subjects), which may limit the generalizability of the findings.