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Decrease in platelet count during saturation diving.

H Domoto1, K Nakabayashi, A Hashimoto

  • 1Japan Maritime Self-Defense Force Undersea Medical Center, Yokosuka, Kanagawa. hdomoto@biochem.swmed.edu

Aviation, Space, and Environmental Medicine
|April 25, 2001
PubMed
Summary
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Saturation diving causes a temporary decrease in platelet count (PC), which returns to normal within a week. This PC change is unlikely to cause clinical issues in divers.

Area of Science:

  • Physiology
  • Diving Medicine
  • Hematology

Background:

  • Platelet count (PC) changes during saturation diving are not well-documented.
  • Investigating PC variations and their relation to dive parameters is crucial for diver safety.

Purpose of the Study:

  • To clarify changes in platelet count (PC) during saturation diving.
  • To determine the relationship between PC changes and dive depth, duration, and decompression bubbles.

Main Methods:

  • 42 divers participated in 8 simulated saturation dives.
  • Platelet counts were measured pre-dive, during the dive, and post-dive.
  • Decompression bubbles were assessed using echocardiography.

Main Results:

Related Experiment Videos

  • A significant decrease in PC was observed during saturation dives, returning to pre-dive levels within one week.
  • No correlation was found between PC changes and dive depth or duration.
  • Decompression bubbles were detected in only 4.8% of divers and resolved quickly.

    • Conclusions:

    • The observed decrease in platelet count during saturation diving is temporary and clinically insignificant.
    • The underlying mechanisms for the decrease in platelet count remain to be elucidated.