What Researchers Did
Researchers examined the effect of a 3.5-hour exposure to a hyperbaric environment (120 kPa(a) PO2) on measures of oxidative stress in ten human divers.
What They Found
Significant increases were observed in hemoglobin, hematocrit, plasma osmolarity, red blood cell osmotic fragility, and thiobarbituric acid reactive substances (TBARS), alongside significant decreases in plasma volume and superoxide dismutase activity (SODa) (P ≤ 0.05 for all). These findings indicate that hyperbaric exposures encountered by technical divers are sufficient to cause significant oxidative stress.
What This Means for Canadian Patients
Canadian divers undergoing prolonged hyperbaric exposures may experience significant oxidative stress, potentially impacting their physiological well-being. This suggests a need for further research into protective measures or monitoring strategies for divers to mitigate these effects.
Canadian Relevance
This study has no direct Canadian connection as it was not conducted in Canada nor involved Canadian participants or institutions.
Study Limitations
The study's small sample size of ten divers may limit the generalizability of these findings to a broader diving population.