Skip to main content

Inflation and deflation pressure-volume loops in anesthetized pinnipeds confirms compliant chest and lungs.

Publication ,  Journal Article
Fahlman, A; Loring, SH; Johnson, SP; Haulena, M; Trites, AW; Fravel, VA; Van Bonn, WG
Published in: Frontiers in physiology
January 2014

We examined structural properties of the marine mammal respiratory system, and tested Scholander's hypothesis that the chest is highly compliant by measuring the mechanical properties of the respiratory system in five species of pinniped under anesthesia (Pacific harbor seal, Phoca vitulina; northern elephant seal, Mirounga angustirostris; northern fur seal Callorhinus ursinus; California sea lion, Zalophus californianus; and Steller sea lion, Eumetopias jubatus). We found that the chest wall compliance (CCW) of all five species was greater than lung compliance (airways and alveoli, CL) as predicted by Scholander, which suggests that the chest provides little protection against alveolar collapse or lung squeeze. We also found that specific respiratory compliance was significantly greater in wild animals than in animals raised in an aquatic facility. While differences in ages between the two groups may affect this incidental finding, it is also possible that lung conditioning in free-living animals may increase pulmonary compliance and reduce the risk of lung squeeze during diving. Overall, our data indicate that compliance of excised pinniped lungs provide a good estimate of total respiratory compliance.

Duke Scholars

Altmetric Attention Stats
Dimensions Citation Stats

Published In

Frontiers in physiology

DOI

EISSN

1664-042X

ISSN

1664-042X

Publication Date

January 2014

Volume

5

Start / End Page

433

Related Subject Headings

  • 3208 Medical physiology
  • 3101 Biochemistry and cell biology
  • 1701 Psychology
  • 1116 Medical Physiology
  • 0606 Physiology
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Fahlman, A., Loring, S. H., Johnson, S. P., Haulena, M., Trites, A. W., Fravel, V. A., & Van Bonn, W. G. (2014). Inflation and deflation pressure-volume loops in anesthetized pinnipeds confirms compliant chest and lungs. Frontiers in Physiology, 5, 433. https://doi.org/10.3389/fphys.2014.00433
Fahlman, Andreas, Stephen H. Loring, Shawn P. Johnson, Martin Haulena, Andrew W. Trites, Vanessa A. Fravel, and William G. Van Bonn. “Inflation and deflation pressure-volume loops in anesthetized pinnipeds confirms compliant chest and lungs.Frontiers in Physiology 5 (January 2014): 433. https://doi.org/10.3389/fphys.2014.00433.
Fahlman A, Loring SH, Johnson SP, Haulena M, Trites AW, Fravel VA, et al. Inflation and deflation pressure-volume loops in anesthetized pinnipeds confirms compliant chest and lungs. Frontiers in physiology. 2014 Jan;5:433.
Fahlman, Andreas, et al. “Inflation and deflation pressure-volume loops in anesthetized pinnipeds confirms compliant chest and lungs.Frontiers in Physiology, vol. 5, Jan. 2014, p. 433. Epmc, doi:10.3389/fphys.2014.00433.
Fahlman A, Loring SH, Johnson SP, Haulena M, Trites AW, Fravel VA, Van Bonn WG. Inflation and deflation pressure-volume loops in anesthetized pinnipeds confirms compliant chest and lungs. Frontiers in physiology. 2014 Jan;5:433.

Published In

Frontiers in physiology

DOI

EISSN

1664-042X

ISSN

1664-042X

Publication Date

January 2014

Volume

5

Start / End Page

433

Related Subject Headings

  • 3208 Medical physiology
  • 3101 Biochemistry and cell biology
  • 1701 Psychology
  • 1116 Medical Physiology
  • 0606 Physiology