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Pulmonary Function Test • Publication 014181-001 Rev 02 • www.datasci.com ©2023 Data Sciences International
Test for Leaks in the Valve Assembly .................................................................................................................. 75
Animal Breathes During Tests ................................................................................................................................. 76
Appendix B – Anesthesia ............................................................................................................................................. 77
First Choice .............................................................................................................................................................. 77
Second Choice ......................................................................................................................................................... 78
Third Choice ............................................................................................................................................................. 78
Notes ....................................................................................................................................................................... 78
Appendix C - Interpretations PFT Results .................................................................................................................... 79
FRC (Functional Residual Capacity) Test.................................................................................................................. 80
Occlude at FRC .................................................................................................................................................... 80
No Efforts During FRC Occlusion ......................................................................................................................... 81
Data Assumptions Met ....................................................................................................................................... 81
PV (Pressure Volume) Test ...................................................................................................................................... 82
Test Starts When Flow Is Zero ............................................................................................................................ 82
At TLC, Volume Rises as Pressure Falls ............................................................................................................... 82
At TLC, Volume Drops as Pressure Falls .............................................................................................................. 83
Almost Vertical Volume Drop Immediately after the Hold Period ..................................................................... 83
Expiratory Duration Should be Long Enough ...................................................................................................... 83
Volume Should Rise Steadily During Inspire to TLC ............................................................................................ 83
Volume-Pressure Curve is Smooth ..................................................................................................................... 83
Overlays of Consecutive PV Tests Differ ............................................................................................................. 84
FV (Flow Volume) Test ............................................................................................................................................ 85
Ripples or Squiggles Near the End of the Flow-Volume Curve ........................................................................... 85
A Flat Top of the Flow Volume Curve ................................................................................................................. 85
A Dip in the Center of the Flow-Volume Curve ................................................................................................... 85
Generally Rounded Flow-Volume Curve ............................................................................................................. 85
FVC Value is Wildly Different Than IC ................................................................................................................. 85
Appendix D - Suggested Reading ................................................................................................................................. 86
Contact Information .................................................................................................................................................... 87
DSI Technical Support—North America .............................................................................................................. 87
DSI Technical Support—Europe .......................................................................................................................... 87
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