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Alternative applications of ndd spirette

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Attention!<br />

Press Activate at the early Start <strong>of</strong> last expiration well before<br />

gas inhalation. The Instrument automatically detects end <strong>of</strong><br />

exhale and opens the gas demand valve (audible sound)<br />

17. Which breath hold time definition do you apply?<br />

We apply the Jones Meade breath hold definition as specified in the ERS ATS, you<br />

can select between 8 and 11 seconds hold time.<br />

18. Why are we not getting a predicted for the VA and the KCO?<br />

the predicted reference used is Miller – and also why is it not reporting the breathhold<br />

time?<br />

The VA parameter has only a predicted in the Knudson reference. Therefore also<br />

the KCO (which is DLCO / VA) will have a predicted in the Knudson reference.<br />

19. About breath hold time (BHT)<br />

The breath hold time (BHT) is only shown for each trial. There is no definition for a<br />

summary value <strong>of</strong> the BHT. Therefore in the summary report the BHT is not shown.<br />

In the DLCO report you have the table with values for each trial. There you should<br />

see all BHTs. You can add this table also to the summary report if you wish.

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