Use Instructions

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MasterScope - Instructions for Use
Version 03.00 • Date 19FEB2020
VCEx or VEX - Expiratory Vital Capacity
The measurement starts with tidal breathing (establishing a stable baseline may
require more than 5 tidal breaths). From tidal breathing the subject takes in a
maximum inspiration to total lung capacity (TLC). When TLC is achieved, a full but
relaxed exhalation to residual volume (RV) should occur, followed by an inspiration
back to tidal breathing to record EVC or VCex.
The Time Ex (expiration time) of the maneuver should last at least 6 seconds.
For visualization, a bar appears which is slowly filled up in red color during
expiration. After 3 or 6 seconds of expiration (children or adult), the filling color
turns green and this test quality criterion is fulfilled.
The EOT (End of Test) bar shows the change in volume in the last second. As
the bar shrinks and changes from red to green, the end of test quality criterion is
fulfilled.