Journal article
Blood flow distribution during hypocapnic hypoxia in pekin ducks and bar-headed geese
Respiration physiology, Vol.61(1), pp.21-30
1985
DOI: 10.1016/0034-5687(85)90025-8
PMID: 3929351
Abstract
The purpose of this study was to determine the effects of hypocapnic hypoxia on regional blood flow in birds. Regional blood flow was measured using the radioactive microsphere method in unanesthetized Pekin ducks (Anas platyrhynchos) and bar-headed geese (Anser indicus) breathing 21, 10 and 5% O2. In both birds, arterial PO2 was reduced from about 96 Torr during normoxia to about 28 Torr during severe hypoxia. Severe hypocapnic hypoxia produced a change in the pattern of blood flow in ducks; blood flow to some organs increased (brain, adrenal glands, heart, and eyes) while flow to other organs decreased (liver, spleen, small intestine, shell gland). Compared with ducks, bar-headed geese were able to provide higher levels of O2 delivery to their tissues since blood flow to a variety of organs and skeletal muscles was either unchanged or increased during severe hypoxia. The redistribution of blood flow in Pekin ducks during severe hypocapnic hypoxia may help to support large increases in cerebral and coronary blood flow but may also contribute to the development of a metabolic acidosis.
Details
- Title: Subtitle
- Blood flow distribution during hypocapnic hypoxia in pekin ducks and bar-headed geese
- Creators
- F. M FARACI - Kansas state univ., dep. anatomy physiologyD. L. JR KILGORE - Kansas state univ., dep. anatomy physiologyM. R FEDDE - Kansas state univ., dep. anatomy physiology
- Resource Type
- Journal article
- Publication Details
- Respiration physiology, Vol.61(1), pp.21-30
- Publisher
- Elsevier; Shannon; Amsterdam
- DOI
- 10.1016/0034-5687(85)90025-8
- PMID
- 3929351
- ISSN
- 0034-5687
- Language
- English
- Date published
- 1985
- Academic Unit
- Cardiovascular Medicine; Neuroscience and Pharmacology; Internal Medicine
- Record Identifier
- 9984040373502771
Metrics
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