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A Strain Gauge Monitor (SGM) for Continuous Valve Gape Measurements in Bivalve Molluscs in Response to Laboratory Induced Diel-cycling Hypoxia and pH
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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
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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.

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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.