pft quiz 3 Flashcards
When exhaling during a FVC the exhale should be greater than or equal to ______ seconds.
6 seconds
If the exhale is less than ______ seconds in a FVC maneuver this would indicate obstructive diease.
3 seconds
This forced vital capacity measurement of FEF 200-1200 is concerned with large/small airways.
The FEF 200-1200 is looking at obstruction in large airways
When measuring FVC what is the range for normal when identifying your reference range?
80-120
T or F: FVC should equal SVC with normal lungs.
True
When you have obstructive lung conditions the FVC will be less than/greater than SVC.
Less than
When looking for obstructive conditions you will measure flows or volumes?
flows
What is the maximum amount of exhale the machine will allow?
15 seconds
What is the amount of exhale a patient should have?
6 seconds
SVC is an important measurement in identifying obstructive or restrictive disease?
Restrictive
Patient instructions: take a maximum inspiration followed by a maximum exhalation without force describes instructions for coaching for which measurement test?
SVC
SVC provides important volumes or flows in assessing the condition of lungs?
SVC provides volumes
How do we measure indirect values for a patient lungs or what type of maneuver is used?
a. FVC
b. SVC
c. FEF
d. Vt
b. SVC
Name the measurements we obtain indirectly.
RV, FRC, TLC
Name the lung measurements we are able to obtain by direct measurement.
IC, IRV, ERV, Vt, VC
A lung ______ is equal to 2 or more lung volumes.
A lung capacity is 2 or more lung volumes
SVC is important in obtaining measurements for restrictive or obstructive disease?
restrictive
Maximum amount of air inspired following normal inspiration which is included in a SVC maneuver describes which procedure?
a. TLC
b. IRV
c. IC
d. Vt
b IRV
Normal breathing followed by maximum exhale which would include consistent resting describes which procedure?
a. ERV
b. IRV
c. Vt
d. PEF
a. ERV
How many times should the ERV be measured to ensure a valid result?
At least two times and you use the largest measurement which come within 5% of each other
T or F: ERV requires consistent resting
True
T or F: The ERV is larger than VC
False, the ERV represents 25% of VC
T or F: There is little variation with IC measurements within populations.
False
_____ consists of normal exhalation & then a maximum inhale in which you observe a resting expiratory level ; while ______ is measuring maximum amount of air inspired following normal inspiration and is not very clinically significant
IC
IRV
When you are measuring IC you should have 2 or 3 measurements within 5% for validity.
2 measurements
Measured on inspiration or slow expiration; to measure inspiration exhale slowly/maximally followed by inhalation as deeply as possible which describes ________ maneuver.
maximally
VC
T or F: VC can be measured on exhalation
T
T or F: VC can be measured only on exhalation that is a maximum inhale followed by a maximum exhale
False; VC can be measured with inhalation or exhalation
Vital Capacity is ______% of TLC
80%
Define pulmonary mechanics: what condition can pulmonary mechanics used to identify?
The lungs ability to move large volumes of air quickly; obstruction
Pulmonary mechanics values measure _______,
a. volume
b. flow
c. diffusion
d. shunting
a. flow
One of the best indicators of obstructive disease includes: A. FEV1 B. FEV2 C. FEV3 D. FEV 0.5
A. FEV1
Average flow rate during mid portion of FVC is: A. FEV1 B. FEF 200-1200 C. FEF 25-75 D. ERV
C. FEF 25-75
This value is associated with large airway obstruction measurements? A. FEV1 B. FEF 200-1200 C. FEF 25-75 D. ERV
B. FEF 25-75
Decreased measurments of this value are associated with large airway obstruction? A. FEV1 B. FEF 200-1200 C. FEF 25-75 D. ERV
b. FEF 200-1200
This measurement may appear normal in abnormal patients. A. FEV1 B. PEFR C. FEV 0.5 D. FVC
B. PEFR
\_\_\_\_\_\_ is one of the best indicators of obstructive disease. A. PEFR B. FVC C. FEV1 D. SVC
A. FEV1
T or F; The largest FEV1 does not always = largest FVC
True
T or F: If your FVC = SVC then this indicates an obstructive condition.
False; When FVC = SVC then this indicates a normal lung pathology
T or F: If your FEV1/FVC ratio is less than 70-75% this would indicate restrictive disease?
False; A FEV1/FVC ratio less than 70% is obstructive
T or F: If your measurement includes any extrapolated time in the value then your measurement is invalid & must be discarded.
F: If your extrapolated value is less than 5% it would be considered valid
T or F: The FVC should provide volumes rates that are smooth, continuous, & complete.
False, FVC provides flow rates that are smooth, continuous, complete
T or F: FVC flow rates provide an important indicator for identification of obstructive disease.
True
\_\_\_\_\_\_\_ is reported as volume but is a flow. A. PEFR B. FVC C. FEV1 D. SVC
C. FEV1
What is a normal range for FEV/FVC ratio?
70-75% or better is normal for fev/fvc ratio
List your ranges for FVC:
80-120 normal 60-79 mild 50-59 moderate 30-49 severe Below 30 very severe FVC test
A person may be clinically not normal but be ________ normal for their history.
Diagnostically
If you have only flow rates and are looking at FVC only because these are the only tests available & when you look your FVC = SVC but the values are low this would imply: A. Normal spirometry test B. Obstructive C. Restrictive D. Both Restrictive & Obstructive
C. Restrictive
When you look at a flow loop diagram and you see a scooped out or concave appearance on the expiration side this would imply? A. Normal B. Obstructive C. Restrictive D. Restrictive & Obstructive
B. Obstructive
T or F: PFT tests are an invaluable tool and often are used in diagnosis of disease.
False; They do not diagnose only show lung pathology for interpretation;
T or F: if a PFT test shows reduced FEV1 values & a history of cigarette smoking it would be appropriate to diagnose a patient with COPD.
False; the patient can only be shown to have an obstructive pattern, not diagnosed with COPD
If you have a flow loop pattern that shows a skinny, tall pattern this is indicative of? A. Normal B. Obstructive C. Restrictive D. Restrictive & Obstructive
C. Restrictive
What are the 3 main things that are evaluated in PFT testing?
Volumes
Flows
Diffusion
T or F: You can have a Fev1/FVC ratio of greater than 70% and also have restrictive condition.
True
A closed flow volume loop consists of what two maneuvers that are diagrammed?
Forced expiratory VC & forced inspiratory VC produces a full image of forced breathing
T or F: Spirometry includes tests of pulmonary mechanics–the measurments of FVC, FEV1, several FEF values, FIF, & MVV.
T
T or F: Pulmonary mechanics tests are invaluable when measuring restrictive conditions of the lungs.
F; they measure obstructive conditions
What is the most common form or test of pulmonary mechanics used which can encompass a range of measurements while the patient is performing a maneuver?
FVC
To exhibit validity how many FVC tests need to be performed?
3 acceptable maneuvers using the two largest measurments that vary by no more than .150 l
T or F: the FVC trial should begin slowly from FRC as the patient builds momentum.
False; FVC should begin abruptly & without hesitation which would include a rapid inhalation to TLC from FRC
A satisfactory rate of start is called ________ which is less than 5% from zero of FVC.
Extrapolated volume
The ______ provides a range of important flow rates to measure obstructive diseases.
FVC
On a flow volume graph this is the highest point.
PEFR
