The Influence of Gas Parameters on the Results of Spirometric Test

Topics:
Healthcare Services
Tags:
Correction,
Temperature
Source:
Slovak Academy of Sciences

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Overview: The paper presents a metrological analysis of the influence of the expiratory gas physical features on the preciseness of the parameters defined during lung tests. Two kinds of spirometric transducers are taken into consideration: a volumetric transducer and a flowmeter. When a volumetric transducer is used, the gas inside changes its temperature and a special correction is necessary, moreover, its value depends on time. When a flowmeter is used the expired gas is measured before its temperature becomes substantially lower and a correction factor shouldn't be the same as for a volumetric transducer. The problems are theoretically analyzed and experimentally confirmed here.

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Format: PDF | Size: 177KB | Date: Jun 2005 | Pages: 4

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