Welch Allyn PneumoCheck Operating Instructions Manual page 17

seal. The mouth should be opened wide enough to avoid any
obstruction by the teeth or tongue.
5. The PneumoCheck will then display BUSY while calculating test
results. It will then provide a series of messages. The first
message appears automatically, and gives an indication of the
patient's effort. The message for an acceptable effort is GOOD
FVC. For a complete list of the other quality control messages
see p. 49.
6.
Press and release the DATA button consecutively to see
additional quality messages and each of the calculated
parameters for the maneuver: FVC, FEW, RATIO (or FEV 1/
FVC%), MMEF (or FEF 25%-75%), and PEF. For a definition
and discussion of these values, refer to Interpretation of Results
(P. 17).
7. Press the TEST button to return to SELECT.
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