Мeasurement of oxygen partial pressure in subcutaneous tissues
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Abstract
In the article an analysis of errors in determining the parameters of the oxygen sensor (OS) was conducted. Some transcutaneous oxygen sensors (TOS), which have been tested and shown good metrological characteristics were taken. Selection of OS was conducted after analysis of measurement errors of oxygen partial pressure (pO2) and the definition of basic metrological characteristics.
Errors of pO2 measurement error in the subcutaneous tissues are divided into two components: the first, relative error of OS measurement is caused by the sensor material, electrolyte and structure; the second, relative error of pO2 measurement is caused by processes that occur directly in subcutaneous tissues (ratio of rates of oxygen delivery to sensor and consumption of oxygen by tissues).
The analysis of OS parameters errors is conducted. Researches have shown better use of solid silver anode, which increases the durability and reliability of the sensor work, reduces the relative error of measurement and improves the stability of sensor characteristics.
Ref. 4, fig. 3, tab 1.
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References
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