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GENERAL COMMENTARY article

Front. Mar. Sci.
Sec. Discoveries
Volume 12 - 2025 | doi: 10.3389/fmars.2025.1557303

General Commentary: The effect of cyclic perfusion

Provisionally accepted
Ran Arieli Ran Arieli *
  • Israel Naval Medical Institute, Haifa, Israel

The final, formatted version of the article will be published soon.

    In a recent interesting study (Paganini et al., 2024), arterial PO2 was measured 18 while diving to 15 and 42 meters of freshwater (mfw). It was explored whether 19 calculation of arterial PO2 at depth could use the arterial/alveolar (partial pressures of 20 oxygen ratio (a:A ratio) at 1 ATA, as suggested by Moon et al., (1987). The a:A ratio 21 calculated from the baseline arterial blood gases obtained at rest, out of the water, 22 adequately predicted the PaO2 at depth. However, at the greater depth of 22 mfw the 23 calculation proved to be inaccurate. Also, Weaver and Howe (1992), presented higher 24 PaO2 than predicted by the a:A ratio. 35 can be related to a better timing between perfusion and elevated PAO2. Modeling this 36 assumption in a single compartment lung, Arieli and Farhi (1985) presented that at

    Keywords: high pressure, Diving, Arterial oxygen, Dense gas, depth

    Received: 09 Jan 2025; Accepted: 03 Feb 2025.

    Copyright: © 2025 Arieli. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Ran Arieli, Israel Naval Medical Institute, Haifa, Israel

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