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Disease Lab 1
Spirometry Lab
| Question | Answer |
|---|---|
| Define FVC | Force Vital Capacity=Ttal volume of air that can be exhaled forcefull from TLC |
| Describe FVC | Take the deepest breath you can in and blast it out as fast and long as you can |
| List the information obtained during a FVC maneuver | IRV=3000 ML VT=500ML OR 5-7 KG OF IBW ERV=1200 RV: NOT MEASURED 1200 ML IC=3500 VC=4700 TLC=NOT MEASURED 6L FRC=NOT MEASURED 2400 ML |
| What are the normal values for each volume and capacity | IRV=3000 mL Vt=500 mL or 5-7 kg of IBW ERV= 1200 mL RV= 1200 mL IC=3500 mL TLC= 6L VC= 4700 mL FRC= 2400 mL |
| List what the characters you would see if you had a obstructive disease | Flow reduced FEV1> 75% pred (could be low in both) FEV1%=<78% obstructive -some text say 80% |
| List what the characteristics you would see in Restrictive disease | FEV1= may be low >75% FEV1%= NORMAL |
| What is the formula for FEV1% | FEV1/FEV |
| What are the most common test to determine where a disease is restrictive or obstructive? | FEV, FEV1, & FEV1% |
| What is measure to determine lung functions | pressure, flow, volume |
| What is the predicted values of the FEF of the large airways | 200-1200 |
| Of the three air ways which is the most effort dependent | Large Airways |
| Which Of the airways should show normal values of 25-75% | Medium airways |
| which of the airways is the least effort dependent | Small (smallest) |
| What are the normal values of FVC | 80-120-normal 70-80-mild 50-70-moderate less than 50- severe |
| Why do we use spirometry | Simple Reproducible Office Based Easy to interprety Cheapest and most reliable ATS stands Diagnose obstruction and rule out restrictive |
| Describe the various settings and ways to obtain a PFT | Health Screen Doctors Office Hospital bedside PFT Spirometry Plethysmography |
| What are some acceptable test when producing reproducibility | Biggest two test within 150-200 mL The largest FVC should be with 150-200 mL PEF- varible but with good effort Need 3 acceptable test with good FEV and FEV1 and take up to 8 tests |
| What is considered a good test | Good start No coughing or hesitation within the 1st second At least 6 seconds with a 1 sec plat No valsalva, glottis closure, or early termination FIVC should show maximum effort |
| How do you choose the best test | Choose the largest for the FVC Largest FEV1 Other values the best when you add FVC + FEV1` |
| List the indications for a PFT | Identify the High Risk Smoker Early dectection of Lung disease Follow the course of lung disease measure therapy effectiveness Determine the cause of dyspnea Evaulate the effects of coocupational exposure Determine degree of impairment |
| Define FEV1 | Forced Expiratory volume- the volume you can blast out in the 1st second of the FVC |
| A pts predicted FVC is 5L. They blow a FVC of 3L. What is their percent predicted? | 3/5=60% |
Created by:
laney21882
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