Is coronary sinus blood oxygen tension behavior determined by myocardial oxygen tension variation during cardiac reperfusion?
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概要
- 論文の詳細を見る
The relationship between coronary sinus blood oxygen tension (CSPO2) and myocardial oxygen tension (MPO2) variations during cardiac ischemia and reperfusion was studied in anesthetized open-chest dogs. Oxygen tension was measured by a polarographic method. Ischemia resulted in a slightly decreased CSPO2 and a more pronounced reduction of MPO2. After reperfusion the CSPO2 rose rapidly and transiently before it returned gradually to the control level. By contrast, during the recovery period, the MPO2 increased slowly, with recovery occurring long after the peak of CSPO2. These data suggest that during the reperfusion phase, the CSPO2 variation is probably due to opening of the myocardial arteriovenous shunts instead of an increase of flow through the myocardial capillary bed.
- International Heart Journal刊行会の論文
著者
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RODRIGUES Maria
Departmamento de Patologia, Faculdade de Medicina
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TUCCI Paulo
Departments of Medicine, Pathology and Biophysics, Medical School of Botucatu, State University "Julio de Mesquita Filho"
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CICOGNA Antonio
Departments of Medicine, Pathology and Biophysics, Medical School of Botucatu, State University "Julio de Mesquita Filho"
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SPADARO Joel
Departments of Medicine, Pathology and Biophysics, Medical School of Botucatu, State University "Julio de Mesquita Filho"
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CURI Paulo
Departments of Medicine, Pathology and Biophysics, Medical School of Botucatu, State University "Julio de Mesquita Filho"
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LUCCHIARI Pedro
Departments of Medicine, Pathology and Biophysics, Medical School of Botucatu, State University "Julio de Mesquita Filho"
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CURI Paulo
Departments of Medicine, Pathology and Biophysics, Medical School of Botucatu, State University "Julio de Mesquita Filho"
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CICOGNA Antonio
Department of Internal Medicine, School of Medicine of Botucatu, State University "Julio de Mesquita Filho"
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RODRIGUES Maria
Departments of Medicine, Pathology and Biophysics, Medical School of Botucatu, State University "Julio de Mesquita Filho"
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LUCCHIARI Pedro
Departments of Medicine, Pathology and Biophysics, Medical School of Botucatu, State University "Julio de Mesquita Filho"
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Cicogna Antonio
Department of Internal Medicine, Botucatu Medical School, State University "Julio de Mesquita Filho"
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