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The instrument now prompts you to avoid flow in the spirette
is advisable to block off the spirette
ible signal sounds when the zero point is set.
The patient must now insert the spirette
breaths) until you hear an audible signal.
The patient must then take a deep inspiration followed by a maximum exhalation.
The instrument stops automatically at the end of the maneuver.
If you are only interested in the vital capacity without determination of the other volumes (ERV, IRV, VT,
IC) the VC maneuver can also be performed without waiting for the acoustic signal.
At the end of the SVC test you can decide to immediately add an FVC test. If you do so the parameter
FEV1/VC (Tiffeneau) is also shown on the printed report of the FVC test.
9.5
MVV
Insert a spirette
arrow on the instrument.
Press ENTER when the patient is ready. You will now hear the sensor buzz.
The instrument now prompts you to avoid flow in the spirette
is advisable to block off the spirette
audible signal sounds when the baseline is set.
The patient must then insert the spirette
for an uninterrupted period of at least 12 seconds.
9.6 OSHA Cotton Dust Protocol (US units only)
This is a specialized routine for users who want to ensure that occupational testing and reports meet
the requirements of NIOSH/OSHA. The unit will automatically perform as described here, regardless of
how the configuration is set. When this protocol is chosen testing and reports are affected as follows:
Only FVC tests are performed
Test quality criteria meets the requirements defined by the Cotton Dust Standard
The Knudson 1976 predicted normals are used
The best three tests and Volume-Time curves will be saved and printed
The curves will be printed in large, validation size
There will be no clinical interpretation displayed or printed
9.7 Disability Protocol (US units only)
This is a specialized routine for users who want to ensure that testing associated with disability deter-
minations meets the requirements of the Social Security Administration. The unit will automatically per-
form as described here, regardless of how the configuration is set. When this protocol is chosen testing
and reports are affected as follows:
A multi-flow calibration is required prior to testing
Unit will be accurate to within 1%
Only FVC tests are performed
The best three tests and Volume-Time curves will be saved and printed
The curves will be printed in large, validation size
Report will include the calibration results
There will be no clinical interpretation displayed or printed
9.8
Post-Test
The Post-Test is usually performed to determine the response on bronchodilating asthma medication.
This is done by treating the patient with a bronchodilator after having performed a FVC or FVL test. Ap-
proximately 10 to 20 minutes after the medication (when bronchodilator shows effect) a second FVC or
FVL test ( post-Test ) is performed. The results of the pre-test and the post test are then compared on
at one end to ensure the baseline is set precisely. An aud-
into the instrument. Ensure that the arrow on the spirette
at one end to ensure precise setting of the baseline. An
while it is setting the baseline. It
into his or her mouth and breathe at rest (about 3-5
while it is setting the baseline. It
into his or her mouth and must fully inhale and exhale
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is lined up with the
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