Frequency of decompression illness among recent and extinct mammals and “reptiles”: a review

@article{Carlsen2017FrequencyOD,
  title={Frequency of decompression illness among recent and extinct mammals and “reptiles”: a review},
  author={Agnete Weinreich Carlsen},
  journal={The Science of Nature},
  year={2017},
  volume={104},
  pages={1-10}
}
  • A. Carlsen
  • Published 27 June 2017
  • Environmental Science
  • The Science of Nature
The frequency of decompression illness was high among the extinct marine “reptiles” and very low among the marine mammals. Signs of decompression illness are still found among turtles but whales and seals are unaffected. In humans, the risk of decompression illness is five times increased in individuals with Patent Foramen Ovale; this condition allows blood shunting from the venous circuit to the systemic circuit. This right-left shunt is characteristic of the “reptile” heart, and it is… 
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References

SHOWING 1-10 OF 94 REFERENCES

Decompression syndrome and the evolution of deep diving physiology in the Cetacea

TLDR
Avascular osteonecrosis was found in the Oligocene basal odontocetes (Xenorophoidea) and in geologically younger mysticetes, such as Aglaocetus, considered as early “experiments” in repetitive deep diving, indicating that they independently converged on their similar specialized diving physiologies.

Absence of decompression syndrome in recent and fossil Mammalia and Reptilia

  • B. Rothschild
  • Environmental Science
    Annals of the Carnegie Museum
  • 1990
Radiologic and gross examination of a large sample of Recent and fossil mammals and reptiles revealed avascular necrosis only in turtles and mosasaurs. Absence of avascular necrosis in other families

Decompression Syndrome and Diving Behavior in Odontochelys, the First Turtle

TLDR
This study suggests that the habit of repetitive diving in turtles was already present in the Late Triassic, but that protective physiological and behavioral adaptations had not yet evolved.

Avascular Necrosis: Occurrence in Diving Cretaceous Mosasaurs

TLDR
A study of vertebrae of extinct giant marine lizards showed the presence of avascular necrosis in two of the three most common genera of these mosasaurs, Platecarpus and Tylosaurus, but absent in a third genus Clidastes.

Decompression sickness ('the bends') in sea turtles.

Decompression sickness (DCS), as clinically diagnosed by reversal of symptoms with recompression, has never been reported in aquatic breath-hold diving vertebrates despite the occurrence of tissue

DECOMPRESSION SYNDROME IN PLESIOSAURS (SAUROPTERYGIA: REPTILIA)

Abstract Recognition of avascular necrosis through propodial head subsidence in fossils indicates that plesiosaurs were susceptible to decompression syndrome and implies deep, prolonged or repetitive

Evolution of Fish-Shaped Reptiles (reptilia: Ichthyopterygia) in Their Physical Environments and Constraints

TLDR
Ichthyosaurs were a group of Mesozoic marine reptiles that evolved fish-shaped body outlines that allowed estimation of such characteristics as optimal cruising speed, visual sensitivity, and even possible basal metabolic rate ranges.

Normal reptile heart morphology and function.

  • J. Wyneken
  • Medicine, Biology
    The veterinary clinics of North America. Exotic animal practice
  • 2009

Cumulative Sperm Whale Bone Damage and the Bends

TLDR
Sixteen sperm whales from calves to large adults showed a size-related development of osteonecrosis in chevron and rib bone articulations, deltoid crests, and nasal bones, suggesting why some deep-diving mammals show periodic shallow-depth activity and why gas emboli are found in animals driven to surface precipitously by acoustic stressors such as mid-frequency sonar systems.
...