The oxygen content of coronary venous blood as affected by anoxia and cytochrome C
| Autor: | Joseph H. Hafkenschiel, James E. Eckenhoff |
|---|---|
| Rok vydání: | 1948 |
| Předmět: |
medicine.medical_specialty
chemistry.chemical_element Oxygen Coronary circulation Internal medicine Arteriovenous oxygen difference medicine Humans Hypoxia Coronary sinus Oxygen saturation (medicine) biology business.industry Cytochrome c Cytochromes c Heart Venous blood Blood flow Coronary Vessels Blood medicine.anatomical_structure chemistry Anesthesia biology.protein Cardiology Cytochromes Cardiology and Cardiovascular Medicine business |
| Zdroj: | American Heart Journal. 36:893-898 |
| ISSN: | 0002-8703 |
| DOI: | 10.1016/0002-8703(48)90282-8 |
| Popis: | 1. 1. By means of the bubble flowmeter and the coronary sinus catheterization methods of investigating the coronary circulation of the dog, the “normal” values for the coronary venous oxygen content have been found to be 3 to 6 volumes per cent. 2. 2. When 8 to 10 per cent oxygen mixtures were breathed, the oxygen content of coronary venous blood was reduced to 2 volumes per cent or less. 3. 3. Increases in oxygen uptake by the heart were accomplished primarily by increases in the volume of coronary blood flow. 4. 4. Cytochrome C, when injected intravenously in amounts varying from 3.8 to 12.5 mg. per kilogram of body weight, did not increase the coronary arteriovenous oxygen difference or the oxygen uptake of the heart. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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