Pulmonary Function Testing (PFT)- Questions and
Answers
The largest volume of gas that can be inspired from resting expiratory level? Correct Ans-
Inspiratory Capacity (IC)
Average Inspiratory Capacity? Correct Ans-3600 ml
Calculation for IC = Correct Ans-Vt + IRV
Inspiratory Capacity makes up about what percentage of tidal volume? Correct Ans-75%
VC stands for? Correct Ans-Vital Capacity
The largest volume measured on complete expiration after the deepest inspiration without
forced or rapid effort? Correct Ans-Vital Capacity (VC)
Average Vital capacity? Correct Ans-4800 ml
Calculation for VC = Correct Ans-Vt + IRV + ERV
FVC is? Correct Ans-Forced Vital Capacity
, Pulmonary Function Testing (PFT)- Questions and
Answers
What is the same as vital capacity, only using *forced* exhalation? Correct Ans-Forced
Vital Capacity (FVC)
Main goal of PFT is to determine if a lung disease is? (2) Correct Ans-Restrictive or
Obstruction
How many times does a test have to be repeated to be considered reliable? Correct Ans-3
times, 5% discrepancy
Vt is? Correct Ans-Tidal Volume
Volume of gas inspired or expired during each respiratory cycle? Correct Ans-Tidal Volume
(Vt)
Calculation for Vt = Correct Ans-IC - IRV
Average Tidal Volume value? Correct Ans-500 ml
IRV is? Correct Ans-Inspiratory Reserve Volume
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