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PFT EXAM FIVE QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS 100% CORRECT RATED A+ NEWLY UPDATED 2025

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PFT EXAM FIVE QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS 100% CORRECT RATED A+ NEWLY UPDATED 2025

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PFT EXAM FIVE QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED A+
NEWLY UPDATED 2025
According to ATS guidelines, what are the required range and accuracy
standards for a diagnostic spirometer?
✔✔
0.5 to 8.0 liters, with an accuracy of ±3% of the reading or ±0.05 L, whichever
is greater.
Explanation:
These standards ensure that spirometry devices provide consistent and reliable
results for clinical decision-making.


A biological control subject has a known FVC of 5.00 L with a standard
deviation (SD) of 0.20 L. After spirometer servicing, three efforts yield the
following results:
 Effort 1: 5.70 L
 Effort 2: 5.75 L
 Effort 3: 5.67 L
What should the pulmonary function technologist conclude?
A. Spirometer performance is within acceptable statistical limits
B. Spirometer performance is questionable
C. The subject gave above-average effort
D. Temperature correction to BTPS was not applied
✔✔ Correct Answer: B. Spirometer performance is questionable
Explanation:
These values are more than 3 SDs above the established mean (5.00 L + 3×0.20
= 5.60 L), which suggests that the device is overestimating lung volumes —
possibly due to calibration or sensor issues.

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  • pft exam five questions and answers with complete
  • according to ats guidelines what are the required
  • a biological control subject has a known fvc of 5

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