Abstract
Gas analyzers of Roken type were generally used for the analysis of respiratory gas to date, but RMR in various kinds of action should be newly measured because the environment of our life is quite different from that of former days. And as the instrument of measuring expiratory gas, formerly expiratory gas analyser of Roken type was chiefly used, but now Breath Analyser and spectral gas analysers of Riken 18 type have been utilized for measuring expiratory gas. They are fit for field study, because of their character of small size and portable type.
We studied errors of measure and care in operation, using spectral gas analyser of Riken 18 type. And also we compared the results with those of other two kinds of instruments. Consequently we got the results as follows:
1) To use spectral gas analyser of Riken 18 type, some practice is necessary to deduce the errors (Tables 2 and 3).
2) To collect trial gas completely the inhaling by spray is necessary more than three times (Fig. 1).
3) Breath Analyser did not give few errors with untrained use (Table 1).
4) There is no difference in the values of measuring expiratory gas in resting and in action by both spectral gas analyser of Riken 18 type, gas analyser of Roken type and Breath Analyser (Tables 4 and 5).
From these results spectral gas analyser of Riken 18 type is useful for the analysis of VO2, VCO2 in expiratory gas.
