Procedures II Test II: Pulmonary Function Tests
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Created by:
monkey93063 on February 27, 2011
Classes:
Clin Procedures II, Penn College PA program 2012
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63 terms
Terms | Definitions |
|---|---|
 measures flow rate | spirometry |
| measures response to bronchodilators | postbronchodilator spirometry |
| measures lung volumes | lung volumes |
| measures diffusion @ alveolar junction | diffusion capacity |
| what do you look for in assessing lung status | volume, speed, stiffness, diffusion characteristics |
| flow problem | obstructive |
| compliance or volume problem is | restrictive |
| _____ is an important pre-op assessment tool | vital capacity |
| pneumothorax, hemoptysis, unstable CV disease, recent eye surgery, recent thorax or abdomen surgery, recent bronchitis or pneumonia, aneurysms are all CI for performing what? | PFT evaluation |
| "Exacerbation of symptoms of disease, Paroxysmal coughing, bronchospasm, chest pain, syncope, fatique or lack of understanding are all what? | potential complications of PFT |
| you must maintain _____ pressure for lungs to expand | negative |
| disease is seen in which airways first | large ones |
| As volume in the thoracic cavity increases pressure in the lungs _______ | decreases |
| the lung never collapses due to | residual volume |
| there is always ______ pressure in the pleural cavity which pulls the lung against the chest wall preventing collapse | negative |
| the deeper the breath the more _____ the pressure | negative |
| volume change of the lung between a full inspiration to total lung capacity an a maximal expiration to residual volume | FVC |
| volume of air which can be forcibly exhaled from the lungs in the first second | FEV1 |
| FEV1 is critically important in dx what | obstructive and restrictive disease |
| indicates what percentage of the total FVC was expelled from the lungs during the first second of exhale | FEV1/FVC% |
| measurement of the single breath diffusing capacity for co2 | DLCO |
| amount of air in the lungs taken at maximal inspiration | TLC |
| maximum volume of air that can be expelled at the normal rate of exhale after max inspiration | VC |
| amount of air breathed in or out during normal resp | TV (450-500mL) |
| amount of air left in lungs after a max exhale | residual volume (1.5L) |
| amount of additional air that can be breathed out after normal expire | ERV (1.5L) |
| amount of additional air that can be inhaled after a normal tidal breath in | Inspiratory reserve volume (2.5L) |
| amount of air left in lungs after a tidal breath out (ERV+RV) | Functional residual capacity |
| volume that can be inhaled after a tidal breath out | IC |
| volume of the airways | anatomical dead space |
| body habitus, age, gender, height, cough, weight, ethnicity, posture, effort, and smoking all effect what | spirometry |
| a post bronchodilator study aids in | dx of asthma |
| if the results of a post-bronchodilator study show _______ the pt has asthma | 12% increase in FEV1 (normal people may show a 5% increase) |
| when interpreting PFT if _____ and ____ are normal go no further the test is normal | FVC and FEV1 |
| If FEV1/FVC is 88 or higher the pt has | restricive lung disease |
| If FEV1/FVC is 69 or lower the pt has | obstructive disease |
| restrictive disease with a low DLCO is | intrinsic |
| restrictive disease with a normal DLCO is | extrinsic |
| an example of extrinsic disease is | lung compression via mass effect |
| examples of intrinsic disease are | interstitial lung disease, acute pneumonitis (inflammation or scarring) |
| obstructive disease with a low DLCO is | emphysema |
| obstructive disease with a normal DLCO is | chronic bronchitis |
| obstructive disease with a normal to high DLCO is | asthma |
| A normal DLCO is | greater than 80% |
| A DLCO of 60-79% indicates | mild disease |
| A DLCO of 40-59% indicates | moderate disease |
| A DLCO of <40% indicates | severe disease |
| normal FVC, TLC, and FEV1 values are | 80-120% |
| decreased ability to move air but lung volume and capacities are the same or greater is | flow problem (obstructive) |
| emphysema is obstructive due to | decreased elastic recoil |
| normal FVC, Dec FEV1, Dec FEV1/FVC, dec PEFR, inc TLC with flatter spirogram curves is | obstructive |
| FEV1 79% is | mild disease |
| FEV1 59-64 is | moderate disease |
| FEV1 below 40 is | severe disease |
| FVC decreased, FEV1 normal or decreased, FEV1/FVC normal or elevated, PEFR normal or dec, VC decreased, TLC dec | restrictive airway disease |
| _____ is typical in pts with more than one disease | mixed disease |
| TLC and FEV1/FVC is decreased | mixed disease |
| measures muscular effort to exhale forcibly, recoil of the lungs, airway function, expression of a complex process of lung emptying is | PEFR test |
| Peak flow is effected by | age, height, sex |
| Green Zone Peak flow | 80-100% continue as usual |
| Yellow zone | 50-80% use caution and monitor |
| Red Zone | <50% seek medical help |
| admit if peak is | <100 after bronchodilator or less than 40% of predicted |
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