Pulmonary Function Tests (PFT)Questions with
Complete Solutions
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.
, Pulmonary Function Tests (PFT)Questions with
Complete Solutions
Common PFTs Correct Answer-1. Spirometry
2. Diffusing capacity
3. Body plethysmography
4. Bronchial provocation
5. Maximal inspiratory/expiratory pressure
6. Exercise testing
7. Arterial blood gasses
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.
Complete Solutions
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.
, Pulmonary Function Tests (PFT)Questions with
Complete Solutions
Common PFTs Correct Answer-1. Spirometry
2. Diffusing capacity
3. Body plethysmography
4. Bronchial provocation
5. Maximal inspiratory/expiratory pressure
6. Exercise testing
7. Arterial blood gasses
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.
