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Related Experiment Video

Updated: Aug 23, 2025

Training Rats to Voluntarily Dive Underwater: Investigations of the Mammalian Diving Response
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Vascular Function Recovery Following Saturation Diving.

Jean-Pierre Imbert1,2, Salih-Murat Egi1,3, Costantino Balestra1,4,5,6

  • 1Environmental, Occupational, Aging (Integrative) Physiology Laboratory, Haute Ecole Bruxelles-Brabant (HE2B), 1090 Brussels, Belgium.

Medicina (Kaunas, Lithuania)
|October 27, 2022
PubMed
Summary
This summary is machine-generated.

Saturation diving stress impacts vascular function, but divers recover within 9 hours post-decompression. This study monitored vascular gas emboli and flow-mediated dilation in saturation divers.

Keywords:
FMDarterial stiffnesscommercial diverdecompressionendothelial dysfunctionflow-mediated dilationhumanhyperbaricoff-shore energy operationunderwater

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Area of Science:

  • Physiology
  • Occupational Health
  • Marine Biology

Background:

  • Saturation diving is a commercial diving technique where decompression sickness (DCS) is a primary safety concern.
  • Modern procedures have significantly reduced DCS incidence over 50 years.
  • New methods are needed to assess diving and decompression stress for operational flexibility.

Purpose of the Study:

  • To monitor physiological stress in saturation divers during operational dives.
  • To evaluate vascular gas emboli (VGE) and flow-mediated dilation (FMD) post-decompression.
  • To assess the impact of saturation diving on vascular function.

Main Methods:

  • Monitoring included detection of VGE and FMD changes after final decompression.
  • Data collected from 49 divers on a North Sea diving support vessel at 120 and 136 msw.
  • Measurements taken before saturation and during the 9 hours post-decompression.

Main Results:

  • VGE detected at very low, insignificant levels in three divers.
  • Impairment of vascular function (FMD) observed immediately post-saturation in all divers.
  • Full recovery of vascular function within 9 hours, irrespective of decompression depth.

Conclusions:

  • Diving and decompression stress may have an oxidative/inflammatory component.
  • Vascular impairment observed in saturation divers shows rapid recovery.
  • Further monitoring is recommended to investigate the oxidative/inflammatory dimension of saturation diving stress.