Lab 4- Pulmonary Function

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University of Louisville *

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396

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Mechanical Engineering

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Dec 6, 2023

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HSS 396 – Lab 4- Pulmonary Function Name Reilly Noble Part 1- Pulmonary Function- Clevemed Spirometer 1) Record FVC ATPS of participants within your group using Clevemed Software and use that value for the remaining calculations. FVC ATPS Value: __________ 3.65L ____________ (value recorded from spirometer) 2) Use equation & information below to determine the BTPS correction factor a. BTPS CF = (310K)/(T A (C°) + 273K) x (P B (mmHg) – P H2O at T A )/(P B (mmHg) – 47 mmHg ) T A : ____ 21 c _______ (ambient temp.) P B : ____ 752 _____ (barometric pressure) P H2O at T A : ___ 19 ______ (water vapor pressure at given ambient temp./use table) Temp: Celsius Temp: Kelvin Water Vapor Pressure 20 293 18 21 294 19 22 295 20 23 296 21 24 297 22 25 298 24 BTPS CF: _____________ 3) Use equation below to determine FVC BTPS from FVC ATPS & the BTPS correction factor a. FVC ATPS x BTPS CF = FVC BTPS FVC BTPS Value: _______________________ 4) Use tables provide to determine participants predicted FVC values, then utilize equation below to determine predicted vs. actual % a. % PFVC = (Actual FVC BTPS (L) / Predicted FVC BTPS (L) ) x 100 Predicted FVC Value (table provided): _____________________ FVC Predicted vs. Actual %: ________________________ 5) Finally determine your participants lung function classification using the table provided below FVC Lung Function Classification: _______________________________ Part 2- Pulmonary Function- Parvo Metabolic Cart

1) FVC Trial 1- _________________ Trial 2- ________________ Trial 3- _______________ Best- __________________ Rank-_________________ 2) FEV 1.0 Trial 1- _______________ Trial 2- ______________ Trial 3- ______________ Best- __________________ Rank-_________________ Classification Percentage High (well above predicted) >/= 120% Good (above predicted) 100-119% Normal (within predicted) 80-99% Mild (restriction FVC or obstruction FEV) 65-79% Moderate (restriction FVC or obstruction FEV) 50-64% Severe (restriction FVC or obstruction FEV) 35-49% Very Severe (restriction FVC or obstruction FEV) <35% Critical Thinking Questions: 1) Individuals with spinal cord injuries have lower than normal forced vital capacities. State what category of lung diseases an FVC test screens for and explain why you think a spinal cord injury would affect the test results. FVC tests screen for restrictive lung diseases. The reduced ability to fully expand the lungs and thoracic cavity due to spinal cord injury would affect the test results. 2) There is a large gender difference between vital capacity and total lung capacity. State which lung volume is primarily responsible for the gender difference and why this volume is larger in men? Inspiratory Reserve Volume is responsible for the greatest difference between genders. This is due to the fact that males are typically larger and therefore have larger lungs than females. 3) Breathing rate and tidal volume both experience non-linear increases with exercise intensity. Explain the increases seen in both variables at low & moderate intensities vs. high intensity exercise. Breathing Rate: Low & Moderate intensities= gradual rise High intensities=rapid rise Tidal Volume: Low & Moderate intensities= rapid increase High intensities=slow increase

4) State the three characteristics that determine an individual’s vital capacity. Then explain how each affects vital capacity. Age: Older individuals lack elasticity in thoracic cages and respiratory muscle. Reduced chest expansion & muscle strength=reduced VC Height: Taller individuals have greater lung size. Greater lung size=greater VC Gender: Men have larger lungs than women

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