Tissue Oxygenation
Milad Ragaey Zekri;
Abstract
Hypoxemia presents a major threat to the body and vigorous compensatory mechanisms are activated especially on the tissues of the body which have critical dependence on the oxygen supply.
The transport system for oxygen is separated into four components which are blood oxygen content, oxygen delivery in arterial blood, oxygen uptake from microcirculation and oxygen extraction ratio.
Monitoring of tissue oxygenation will depend on measurement of supply dependency, blood lactate concentration and gastric tonometry.
Many causes of hypoxaemia are considered during and after anaesthesia.
Causes of intra-operative hypoxaemia may be divided into two categories based on the alveolar oxygen pressure (PA 02).
- Reduced PA02 is caused by either reduced inspired
oxygen fraction or hypoventilation.
- Hypoxaemia with normal or increased PA 02 is due to increased venous admixture.
The transport system for oxygen is separated into four components which are blood oxygen content, oxygen delivery in arterial blood, oxygen uptake from microcirculation and oxygen extraction ratio.
Monitoring of tissue oxygenation will depend on measurement of supply dependency, blood lactate concentration and gastric tonometry.
Many causes of hypoxaemia are considered during and after anaesthesia.
Causes of intra-operative hypoxaemia may be divided into two categories based on the alveolar oxygen pressure (PA 02).
- Reduced PA02 is caused by either reduced inspired
oxygen fraction or hypoventilation.
- Hypoxaemia with normal or increased PA 02 is due to increased venous admixture.
Other data
| Title | Tissue Oxygenation | Other Titles | اكسجة الانسجة | Authors | Milad Ragaey Zekri | Issue Date | 2000 |
Attached Files
| File | Size | Format | |
|---|---|---|---|
| ميلاد رجائى.pdf | 3.15 MB | Adobe PDF | View/Open |
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