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PFT test quiz 180 Flashcards | StudBud
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PFT test quiz 180
PFT test quiz 180
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1
Which of the following is the normal Tidal Volume (Vt) in adults?
~250mL
~750mL
~1000mL
~500mL
2
In a bronchial challenge test, what indicates airway hyperreactivity?
A drop in FEV1 >20%
A decrease in carbon dioxide exhalation
An increase in closing volume
An increase in residual volume (RV)
3
What is a major consideration when performing PFTs in children?
Using blood gas analysis instead of spirometry
Using standardized adult values
Ensuring patient cooperation
Skipping calibration due to age differences
4
What does Carbon Monoxide Diffusing Capacity (DLCO) assess?
Gas exchange efficiency across the alveolar-capillary membrane
The amount of carbon dioxide exhaled per minute
Airflow obstruction
The total lung capacity
5
How does restrictive lung disease affect lung volumes?
Increases residual volume (RV)
Has no effect on lung volumes
Decreases total lung capacity (TLC)
Increases total lung capacity (TLC)
6
A significant increase in FEV1 (>12% and 200mL) after bronchodilator use suggests:
Reversible airway obstruction (e.g., asthma)
Pulmonary fibrosis
Lung collapse
COPD
7
How do volume-based and flow-based spirometers differ?
There is no difference between them
Volume based measure air displacement/flow based calculate velocity
Flow-based spirometers measure air displacement
Volume-based spirometers measure airflow velocity
8
What does capnography measure?
Lung compliance
Blood pH levels
Oxygen saturation in the blood
Exhaled carbon dioxide (CO2) levels
9
What does a high FeNO level indicate?
Bacterial pneumonia
Decreased lung compliance
Pulmonary embolism
Eosinophilic inflammation in asthma
10
What does the Gas Distribution Test evaluate?
How evenly gas is distributed in the lungs
Maximum inspiratory pressure
The total lung capacity
The oxygen diffusion capacity of the alveoli
11
What does the Single Breath Nitrogen Washout test measure?
Forced expiratory volume in 1 second (FEV1
Uniformity of gas distribution in the lungs
Oxygen saturation levels
Lung compliance
12
Why is quality control essential in pulmonary function testing labs?
To ensure accurate test results
To make tests easier for patients
To increase the number of tests performed daily
To reduce technician involvement
13
Why is Closing Volume (CV) important?
It measures alveolar gas exchange
It indicates when small airways start to close
It assesses total lung volume
It determines oxygen diffusion capacity
14
What is Functional Residual Capacity (FRC
The volume of air remaining in the lungs after normal exhalation
The maximum amount of air a person can exhale
The amount of air inhaled in a single breath
The total amount of air the lungs can hold
15
What is Alveolar Ventilation?
The oxygen diffusion capacity of alveoli
The total amount of air entering the lungs per minute
The amount of air that does not participate in gas exchange
The effective ventilation reaching alveoli for gas exchange
