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THE MVV TEST
DESCRIPTION
The MVV or Maximal Voluntary Ventilation is another type of spirom-
etry test. When doing an MVV, the patient is required to breathe in
and out as deeply and as rapidly as possible for a period of 12 to 15
seconds.
Specific indications for doing the test are:
1.
Social Security evaluation for total disability from COPD.
2.
Determination of coal miners' total disability due to
pneumoconiosis.
3.
Biannual pulmonary surveillance of employees exposed to
cotton dust.
4.
Preoperative evaluation of overall breathing ability.
5.
Evaluation of dyspnea unexplained by the FVC maneuver,,.
MEASUREMENT PARAMETERS
The parameters that are measured during an MVV maneuver are:
The MVV:
l
by the lungs during the test.
Rate:
MVV
l
Time:
MVV
l
portion of the maneuver.
NOTE: During MVV maneuvers in the normal operating mode, the
instrument assumes that air at body temperature and pressure, fully
saturated with water (BTPS) will be used, and a BTPS factor is
applied.
The total amount of air (in liters per minute) moved
The breathing rate (in breaths per minute).
The elapsed time (in seconds) of the usable
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