Pulmonary Function Tests (PFT) Questions Answered & Graded
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Course
PTF
Institution
PTF
What is the primary function of the lungs? - Correct Answer 1. Oxygenation of mixed venous blood.
2. Removal of carbon dioxide from mixed venous blood.
Primary function depends on the integrity of 4 things: - Correct Answer 1. Airway
2. Pulmonary vasculature
3. Respiratory muscles
4. Respi...
Pulmonary Function Tests (PFT) Questions
Answered & Graded
What is the primary function of the lungs? - Correct Answer 1. Oxygenation of mixed
venous blood.
2. Removal of carbon dioxide from mixed venous blood.
Primary function depends on the integrity of 4 things: - Correct Answer 1. Airway
2. Pulmonary vasculature
3. Respiratory muscles
4. Respiratory control mechanism
PFTs help determine 7 things: - Correct Answer 1. Presence of disease or abnormal
lung function.
2. Extent of dysfunction.
3. Extent of impairment/disability
4. Progression of disease.
5. Nature of physiological disturbance.
6. Effect or course of therapy.
7. Aid clinical prognosis.
Spirometry - Correct Answer Measures air flow and volumes.
Flow/volume relationship - Correct Answer Peak flow reaches its maximal level
somewhere near total lung capacity.
As lung volume decreases, resistance increases due to intrathoracic airway narrowing.
How air flows - Correct Answer Air flows from higher to lower pressure. There is a
balance between forces: pressures trying to collapses and structures trying to keep
airways open.
FVC - Correct Answer Forced Vital Capacity (when person is forcing air out)
FEV1 - Correct Answer Forced Expiratory Volume in one second. (Amount of air that
can be blown out of lungs in one second)
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