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31 Cards in this Set
- Front
- Back
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The volume to which lungs can be expanded with greatest imspiratory effort is __.
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Total Lung Capacity
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The volume of air inspired and expired during normal respiration __.
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Tidal Volume
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Maximum volume of air that can be inspired after inhalation on a normal tidal volume __.
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inspiratory reserve volume
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volume of air remaining in lungs after maximum exhalation is __.
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residual volume
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COPD, asthma, and cystic fibrosis are examples of __.
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obstructive lung disease
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When air flow is impeded...this is an __ lung disease.
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obstructive
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When air volume is reduced...this is an __ disease.
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restrictive lung disease
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There are 3 types of restrictive lung disease, what are they?
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extrinsic, intrinsic, neuromuscular
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asbestosis, black lung dx, silicosis, obesity are examples of __ lung disease.
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extrinsic
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Lupus, scleroderma, sarcoidosis, and wegners granuloma are examples of __ lung disease.
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intrinsic
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Polio, myasthenia gravis, ALS, and muscular dystrophy are examples of __ lung disease.
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neuromuscular lung disease
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Complications of PFT's include?
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lightheadedness
syncope asthma exacerbation |
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The volume of air forcibly and maximally exhaled until no more can be expired.. is called?
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forced vital capacity-FVC
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the volume of air forcibly exhaled in the first second of a forced expiratory maneuver...is called?
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forced expiratory volume in 1 second-FEV1
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what percentage of total FVC is expelled during the first second of forced exhalation is...?
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FEV1/FVC ratio
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PFT compares flow (liter/sec) on the Y axis to volume of __ (liters) on the X axis.
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air flow
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Normal PFT results are based on...
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age
gender race ht and wt |
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What should the pt. refrain from doing/using for 6 hours prior to a PFT?
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smoking
using bronchodialators |
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Good response to bronchodialator therapy is suggested by 2 of the ...?
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increase in FVC of 10% or more
increase in FEV1 of 15% increase in FEV25%-FEV75% of 20% or more |
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What test is done to establish bronchioconstriction suggestive of hyper-reactive airway?
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methacholine challenge
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>85% of predicted value is ..
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normal
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65-85% of predicted value is..
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mild disease
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50-65% of predicted value is..
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moderate disease
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<50% of predicted value is..
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severe disease
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FVC is __ in restrictive airway disease.
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reduced
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FEV1 is __ in obstructive disease.
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reduced
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FEV1 is __ or normal in restrictive airway disease.
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reduced or normal
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FEV1/FVC may be normal in restrictive dx, but is __ __ in obstructive dx.
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always reduced
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A reduced overall lung capacity lead to a low FVC in __ airway disease
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restrictive airway disease
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significant mucus plugging or bronchoconstriction leads to a low FEV1 in __ airway dx.
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obstructive airway disease
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Normal FEV1/FVC=
Low FEV1/FVC= |
restrictive
obstructive |
