Welch Allyn CardioPerfect Workstation SpiroPerfect Module - User Manual - Manual (Page 93)

CardioPerfect Workstation
SpiroPerfect Module
– User Manual
DIR 80012334 Ver. F 93 / 95
parameter. A commonly defined attribute of a spirometric waveform (FVC, FEV1, and so on).
pediatric. Generally, under 18 years old. Age limits vary with each norm. Also young
children’s lung sizes vary greatly. Norm values and interpretive results are not available for
patients under 3 years of age. Pediatric use in the US for ages 6 and above.
PEF. Peak expiratory flow (in L/s). The largest expiratory flow achieved with a forced effort.
PIF. Peak inspiratory flow (in L/s). The largest inspiratory flow achieved with a forced effort.
post-test. A test that provides data to compare with pre-test data. Sometimes called post-Rx
or post-BD (bronchodilator). A post-test must follow a pre-test within 24 hours. See also
reversibility.
predictive curve. A curve that follows a set of predictive points.
predictive points. Key values from the selected norm and from composite norms (if
enabled). Applicable for FVC tests only. For flow/volume curves, predictive values are PEF,
FEF25, FEF50, FEF75, and FVC (all are represented as points). For volume/time curves,
predictive values are FEV1 (represented as point) and FVC (represented as horizontal line). If
predictive points are enabled, all available values appear on the screen and the printout.
pre-test. A test that provides a baseline for comparison with a post-test taken by the same
patient. Sometimes called pre-Rx or pre-BD (bronchodilator). Pre-tests and post-tests are
commonly used to evaluate the effectiveness of medication. See also reversibility.
reversibility. The percentage difference between pre-test and post-test data. This
measurement indicates the effect of medication on lung function. Reversibility applies to each
parameter separately. The reversibility formula, which determines the way in which
reversibility is calculated, is user-selectable.
SVC. Slow (relaxed) vital capacity. (1) A type of test in which patients breathe normally
several times, then inhale maximally and exhale maximally, or vice versa. (2) An important
parameter (in liters): the maximum volume of air exhaled from the point of maximum
inhalation, or maximum volume of air inhaled from a point of maximum exhalation.
test. A set of efforts
—at least 1 and no more than 12—in various possible combinations of
FVC efforts, SVC efforts, or both. Tests may include pre- and post-efforts (FVC or SVC to
measure the effectiveness of medication.
Tex. Tidal breathing expiration time (in seconds). See also tidal breathing.
tidal breathing. Spontaneous or normal breathing. See also Tin and Tex.
tidal volume. See VT.
Tin. Tidal breathing inspiration time (in seconds). See also tidal breathing.
Tin/Tex. The ratio of these two parameters. See also Tin and Tex.
TV. See VT.
variance.
The difference between the best and second best effort’s parameter for FEV1 and
FVC. Pretest and post-test variance are reported separately. See also best effort.
VC. Vital capacity. See also FVC and SVC.
volume = f(t). See volume/time.