Pulmonary function test 1-answered
How do you interpret spirometry for FEV1 for obstructive lung disease ? - ANSWER-
Normal (very mild obstruction) or decreased (mod/severe obsruction)
How do you interpret spirometry for FEV1 for restrictive lung disease? - ANSWER-
Normal or decreased
How do you interpret spirometry for FEV1/FVC for obstructive lung disease ? -
ANSWER-Decreased (<70%)
How do you interpret spirometry for FEV1/FVC Ratio for restrictive lung disease? -
ANSWER-Normal or increased (>69%)
How do you interpret spirometry for FVC for obstructive lung disease ? - ANSWER-
Normal (mild/mon obstruction) or decreased (severe obstriction)
How do you interpret spirometry for FVC for restrictive lung disease? - ANSWER-
Decreased
If the Spirometry suggests an Obstructive ventilatory impairment what should you do? -
ANSWER-perform a Bronchodilator challenge.
Interpret when FEV1 is approximately 45% of predicted, and FVC is 75%. And His
calculated FEV1/FVC ratio is 0.51, or 51% of the FVC. - ANSWER-Obstructive
emphasema
Normal range of PFT for FEV1? - ANSWER-80-120% of the Predicted
Normal range of PFT for FEV1/FVC ratio? - ANSWER-Greater than 0.7 and within 5%
of Predicted
Normal range of PFT for FVC? - ANSWER-80-120% of the Predicted
Spirogram - ANSWER-
tidal volume graph - ANSWER-
Waht are indications for spirometry? - ANSWER-Indications ● Detecting pulmonary
disease
○ Evaluation of dyspnea ○ Chronic phlegm production ○ Cyanosis ○ Finger clubbing ○
Abnormal ABGs or CXR
● Assessing severity or
progression of known disease ● Risk stratification of patients
for certain surgeries
, ○ Cardiothoracic procedures ○ Others if pulmonary disease
What are 4 examples of lung capacity measurements? - ANSWER-○ Functional
Residual Capacity (FRC)
○ Inspiratory Capacity (IC)
○ Total Lung Capacity (TLC)
○ Vital Capacity (VC)
What are 4 examples of lung volume measurements? - ANSWER-○ Expiratory Reserve
Volume (ERV)
○ Inspiratory Reserve Volume (IRV)
○ Residual Volume (RV)
○ Tidal Volume (TV or VT)
What are contraindicaitons for spirometry? - ANSWER-● Acute disorders affecting test
performance (vomiting, etc)
● Hemoptysis
● Pneumothorax
● Recent cardiothoracic or
abdominal surgery
● Recent eye surgery (increases IOP during spirometry)
● Recent MI or unstable angina
● Known thoracic aneurysm
What are the most important values used to plot graphs and diagnose many conditions?
- ANSWER-○ Forced Vital Capacity
○ Forced Expiratory Volume
○ Forced Expiratory Flow
○ FEV1/FVC Ratio
What causes PFT results to vary and are required for accurate spirometry
interpretation? - ANSWER-○ Age
○ Gender
○ Height
○ Weight
○ Race
What do you look at when interpreting spirometry? - ANSWER-● First look at
FEV1/FVC, and then look at FVC.
What does a decreased FEV1 (usually), normal or decreased FVC, and
decreased FEV1/FVC ratio of 0.7 or less mean? - ANSWER-Obstructive pattern
disease
What does no change in the bronchodilator challenge mean? - ANSWER-■ If no
change, likely Emphysema, CF, or Chronic Bronchitis.
How do you interpret spirometry for FEV1 for obstructive lung disease ? - ANSWER-
Normal (very mild obstruction) or decreased (mod/severe obsruction)
How do you interpret spirometry for FEV1 for restrictive lung disease? - ANSWER-
Normal or decreased
How do you interpret spirometry for FEV1/FVC for obstructive lung disease ? -
ANSWER-Decreased (<70%)
How do you interpret spirometry for FEV1/FVC Ratio for restrictive lung disease? -
ANSWER-Normal or increased (>69%)
How do you interpret spirometry for FVC for obstructive lung disease ? - ANSWER-
Normal (mild/mon obstruction) or decreased (severe obstriction)
How do you interpret spirometry for FVC for restrictive lung disease? - ANSWER-
Decreased
If the Spirometry suggests an Obstructive ventilatory impairment what should you do? -
ANSWER-perform a Bronchodilator challenge.
Interpret when FEV1 is approximately 45% of predicted, and FVC is 75%. And His
calculated FEV1/FVC ratio is 0.51, or 51% of the FVC. - ANSWER-Obstructive
emphasema
Normal range of PFT for FEV1? - ANSWER-80-120% of the Predicted
Normal range of PFT for FEV1/FVC ratio? - ANSWER-Greater than 0.7 and within 5%
of Predicted
Normal range of PFT for FVC? - ANSWER-80-120% of the Predicted
Spirogram - ANSWER-
tidal volume graph - ANSWER-
Waht are indications for spirometry? - ANSWER-Indications ● Detecting pulmonary
disease
○ Evaluation of dyspnea ○ Chronic phlegm production ○ Cyanosis ○ Finger clubbing ○
Abnormal ABGs or CXR
● Assessing severity or
progression of known disease ● Risk stratification of patients
for certain surgeries
, ○ Cardiothoracic procedures ○ Others if pulmonary disease
What are 4 examples of lung capacity measurements? - ANSWER-○ Functional
Residual Capacity (FRC)
○ Inspiratory Capacity (IC)
○ Total Lung Capacity (TLC)
○ Vital Capacity (VC)
What are 4 examples of lung volume measurements? - ANSWER-○ Expiratory Reserve
Volume (ERV)
○ Inspiratory Reserve Volume (IRV)
○ Residual Volume (RV)
○ Tidal Volume (TV or VT)
What are contraindicaitons for spirometry? - ANSWER-● Acute disorders affecting test
performance (vomiting, etc)
● Hemoptysis
● Pneumothorax
● Recent cardiothoracic or
abdominal surgery
● Recent eye surgery (increases IOP during spirometry)
● Recent MI or unstable angina
● Known thoracic aneurysm
What are the most important values used to plot graphs and diagnose many conditions?
- ANSWER-○ Forced Vital Capacity
○ Forced Expiratory Volume
○ Forced Expiratory Flow
○ FEV1/FVC Ratio
What causes PFT results to vary and are required for accurate spirometry
interpretation? - ANSWER-○ Age
○ Gender
○ Height
○ Weight
○ Race
What do you look at when interpreting spirometry? - ANSWER-● First look at
FEV1/FVC, and then look at FVC.
What does a decreased FEV1 (usually), normal or decreased FVC, and
decreased FEV1/FVC ratio of 0.7 or less mean? - ANSWER-Obstructive pattern
disease
What does no change in the bronchodilator challenge mean? - ANSWER-■ If no
change, likely Emphysema, CF, or Chronic Bronchitis.
