EPO modulation in a 14-days undersea scuba dive
L Revelli1, S Vagnoni, A D'Amore
1Endocrine and Metabolic Surgery, Catholic University of the Sacred Heart, Rome, Italy.
International Journal of Sports Medicine
|May 15, 2013
Summary
Deep saturation dives impact erythropoiesis by decreasing serum erythropoietin (s-EPO) and reticulocytes. A rise in s-EPO post-dive suggests potential clinical applications for managing hemoglobin levels.
Area of Science:
- Physiology
- Hyperbaric Medicine
- Hematology
Background:
- Deep saturation diving affects physiological processes, including erythropoiesis.
- Potential mechanisms involve reduced serum erythropoietin (s-EPO) or hyperbaric hyperoxia toxicity.
Purpose of the Study:
- To evaluate changes in s-EPO and hematological parameters during and after a 14-day saturation dive.
- To investigate the impact of prolonged hyperbarism on erythropoiesis.
Main Methods:
- Six scuba divers participated in a 14-day saturation dive at 8-10m, breathing air at 1.8-2 ATA.
- Serum parameters, including s-EPO and reticulocytes, were measured at multiple time points before, during, and after the dive.
Main Results:
- Hematocrit (Ht), s-EPO, and reticulocyte counts declined progressively during the dive.
- Hemoglobin (Hgb) levels remained unchanged.
- A significant increase in s-EPO was observed 24 hours after resurfacing.
Conclusions:
- Prolonged hyperbarism appears to affect erythropoiesis, indicated by decreased s-EPO and reticulocytes.
- The post-dive s-EPO rise aligns with the 'Normobaric Oxygen Paradox'.
- Findings suggest potential clinical applications for oxygen administration in pre-surgical patients and anemia treatment.
