Pulmonary Function Testing Lab
Personnel:
A subject
A test supervisor
Equipment:
A Spirometer (MIR II spirometer)
Winspiro PR software
Procedures:
Initial Information
Input demographic and anthropometric information for the subject
Flow Volume Loop Testing
Instruct subject to sit comfortable in a chair (upright) with both feet on the floor
Instruct subject on what will occur during the test
Specifically demonstrate proper breathing technique for test
Have the subject secure the nose clip
Prepare the spirometer and software for testing
Have the subject perform the maneuver
Record the data
Perform the test 2-3 times
Maximum Voluntary Ventilation Testing
Instruct subject to sit comfortable in a chair (upright) with both feet on the floor
Instruct subject on what will occur during the test
Specifically demonstrate proper breathing technique for test
Have the subject secure the nose clip
Prepare the spirometer and software for testing
Have the subject perform the maneuver
Encourage the subject during testing
Perform the test 2-3 times
Data:
Flow-Volume Curve (FVC Loop) data for all subjects
| Subject #1 | Subject #2 | Subject #3 | ||||
| Parameter | Actual | % Pred | Actual | % Pred | Actual | % Pred |
| FVC | 5.24 | 117 | 5.03 | 89 | 3.54 | 106 |
| FEV1.0 | 4.31 | 108 | 4.33 | 89 | 3.08 | 105 |
| FEV1.0/FVC | 82.3 | 95 | 86.1 | 102 | 87 | 97 |
| FEFmax (PEF) | 10.18 | 127 | 11.62 | 116 | 6.85 | 108 |
| FEFmid (25-75) | 4.31 | 91 | 4.70 | 87 | 3.56 | 98 |
Maximum Voluntary Ventilation data for all subjects:
| Parameter | Predicted | Actual |
| Subject #1 | 140.5 | 186.3 |
| Subject #2 | 143.5 | 202.7 |
| Subject #3 | 111.9 | 142.6 |
Questions:
- Do any subjects have signs of restrictive or obstructive disorders? If so, explain.
- What is residual volume? Residual Volume (RV) can be estimated from your data. Calculate RV for each subject.
Females: RV(L) = .28 x FVC
Males: RV(L) = .24 x FVC
- Asthmatics tend to have smaller airways narrowed by smooth muscle constriction, thickening of the walls and mucous secretion. How specifically would this effect their PFT data?
- If a subject had a maximum exercise VE near or equal to their MVV values, what would this signify?
- Why might dizziness or syncope accompany the measurement of MVV?
