Cardiac output and stroke volume in swimming harbor seals

Paul J. Ponganis, Gerald L. Kooyman, Mark Zornow, Michael A. Castellini, Donald A. Croll

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Cardiac output was measured by the thermodilution method in three young harbor seals, at rest and while swimming up to the maximum effort for which they could be trained. Stroke volume was determined by counting heart rate simultaneously with determination of cardiac output. Cardiac outputs varied widely between surface breathing (7.8 ml · kg-1 · s-1) and breath-holding while swimming under water (1.8 ml · kg-1 · s-1). Stroke volume while at the surface was almost twice the volume white submerged. Surface cardiac output was always near maximal despite work effort, whereas submerged cardiac output gradually increased at higher work efforts. The cardiovascular performance of seals at the maximum MO2 we could induce from them is equivalent to that of the domestic goat.

Original languageEnglish (US)
Pages (from-to)473-482
Number of pages10
JournalJournal of Comparative Physiology B
Volume160
Issue number5
DOIs
StatePublished - Dec 1990
Externally publishedYes

Fingerprint

Phoca
Cardiac Volume
Phoca vitulina
cardiac output
Ports and harbors
stroke
Cardiac Output
Stroke Volume
harbor
goat
Seals
Breath Holding
Thermodilution
Goats
Water
seals
breathing
heart rate
Respiration
Heart Rate

Keywords

  • Breath-hold
  • Percutaneous
  • Phoca vitulina
  • Pulmonary artery
  • Thermodilution

ASJC Scopus subject areas

  • Physiology (medical)
  • Environmental Science(all)
  • Physiology
  • Animal Science and Zoology

Cite this

Ponganis, P. J., Kooyman, G. L., Zornow, M., Castellini, M. A., & Croll, D. A. (1990). Cardiac output and stroke volume in swimming harbor seals. Journal of Comparative Physiology B, 160(5), 473-482. https://doi.org/10.1007/BF00258974

Cardiac output and stroke volume in swimming harbor seals. / Ponganis, Paul J.; Kooyman, Gerald L.; Zornow, Mark; Castellini, Michael A.; Croll, Donald A.

In: Journal of Comparative Physiology B, Vol. 160, No. 5, 12.1990, p. 473-482.

Research output: Contribution to journalArticle

Ponganis, PJ, Kooyman, GL, Zornow, M, Castellini, MA & Croll, DA 1990, 'Cardiac output and stroke volume in swimming harbor seals', Journal of Comparative Physiology B, vol. 160, no. 5, pp. 473-482. https://doi.org/10.1007/BF00258974
Ponganis, Paul J. ; Kooyman, Gerald L. ; Zornow, Mark ; Castellini, Michael A. ; Croll, Donald A. / Cardiac output and stroke volume in swimming harbor seals. In: Journal of Comparative Physiology B. 1990 ; Vol. 160, No. 5. pp. 473-482.
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