PFT Multiple Choice Questions- Solved
100% Correct
At STPD, what is the normal value for DLCO for a resting adult male? - ANSWER-25
mL/min/mmHg
At what age do pulmonary volumes and expiratory flow rates start to decrease? -
ANSWER-25 years
At what lung capacity or volume should MEP be measured? - ANSWER-TLC
Body plethysmography uses a modification of which law to indirectly measure gas
volume within the lungs? - ANSWER-Boyle's law
For the FEVT, what is the most frequently used time interval? - ANSWER-1 second
In a healthy adult, what percent of the total FVC should be exhaled in 0.5 seconds? -
ANSWER-60%
In a healthy adult, what percent of the total FVC should be exhaled in 2 seconds? -
ANSWER-94%
In a healthy young male, what would the sum of VC + RV equal in mL? - ANSWER-
6000 mL
In addition to bedside spirometry, what additional information can useful to help
differentiate between obstructive and restrictive lung disorders and their severity and
help formulate a therapeutic plan?
I. History
II. Chest X-ray
III. ABG
IV. Comprehensive pulmonary function study - ANSWER-I, II, III, and IV
In COPD, what maneuver is often used by patients to offset dynamic compression? -
ANSWER-pursed-lip breathing
In the open circuit washout method, what gas mixture does the patient breathe for the
test? - ANSWER-100% O2
In which of the following disorders would the TET during an FVC likely be increased?
I. Asthma
II. Cystic fibrosis
100% Correct
At STPD, what is the normal value for DLCO for a resting adult male? - ANSWER-25
mL/min/mmHg
At what age do pulmonary volumes and expiratory flow rates start to decrease? -
ANSWER-25 years
At what lung capacity or volume should MEP be measured? - ANSWER-TLC
Body plethysmography uses a modification of which law to indirectly measure gas
volume within the lungs? - ANSWER-Boyle's law
For the FEVT, what is the most frequently used time interval? - ANSWER-1 second
In a healthy adult, what percent of the total FVC should be exhaled in 0.5 seconds? -
ANSWER-60%
In a healthy adult, what percent of the total FVC should be exhaled in 2 seconds? -
ANSWER-94%
In a healthy young male, what would the sum of VC + RV equal in mL? - ANSWER-
6000 mL
In addition to bedside spirometry, what additional information can useful to help
differentiate between obstructive and restrictive lung disorders and their severity and
help formulate a therapeutic plan?
I. History
II. Chest X-ray
III. ABG
IV. Comprehensive pulmonary function study - ANSWER-I, II, III, and IV
In COPD, what maneuver is often used by patients to offset dynamic compression? -
ANSWER-pursed-lip breathing
In the open circuit washout method, what gas mixture does the patient breathe for the
test? - ANSWER-100% O2
In which of the following disorders would the TET during an FVC likely be increased?
I. Asthma
II. Cystic fibrosis
