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3.
The patient performs an MVV maneuver by inhaling deeply,
placing the instrument in the mouth, and then panting forcefully
through the pneumotach, beginning with an exhalation. The
patient should continue until the PneumoCheck beeps (15
seconds after the start of the maneuver). Patient should not
block the back end of the pneumotach.
4.
Upon completion of the maneuver, the word BUSY will be
displayed while the PneumoCheck calculates the results. The
quality control message will then be displayed.
Press and release the DATA button consecutively to see
5.
additional quality messages and MVV test parameters. (See pp.
20 and 49 for more detail.)
Press the TEST button to return to SELECT.
6.
DOING MULTIPLE TESTS ON A PATIENT
page
See
14.
ASSESSING ACCEPTABILITY
page
See
15.
SELECTING BEST TEST
page
See
15.
DETERMINING REPEATABILITY
page
See
15.
MATCH CRITERIA
page 16.
See
INTERPRETATION OF RESULTS
MVV results have been found to correlate with the degree of dysp-
nea and the level of disability. An abnormal result may be caused by
obstructive or restrictive lung diseases, respiratory muscle weak-
ness, poor physical conditioning or neurological diseases. However,
it should be noted that abnormal results could be produced by poor
patient effort during the test.
22
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