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Exam (elaborations)

PFT Mock Exam Graded A+

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  • Course
  • Pulmonary Function
  • Institution
  • Pulmonary Function

PFT Mock Exam Graded A+

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  • August 26, 2024
  • 13
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Pulmonary Function
  • Pulmonary Function
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LUCKYSTAR2022
PFT Mock Exam Graded A+
A correctly performed open-circuit nitrogen washout test requires that the test last for:

a. 7 minutes and/or until a final nitrogen concentration of 1% is measured
b. 7 minutes and/or until a final nitrogen concentration of 10% is measured
10 minutes and/or until a final nitrogen concentration of 5% is measured
10 minutes and/or until a final nitrogen concentration of 10% is measured - ANSWER-a.
7 minutes and/or until a final nitrogen concentration of 1% is measured

A patient berathing room air at sea level is termed hypocemic if his PaO2 is equal to

a. 70
b. 80
c. 95
d. 120 - ANSWER-a. 70

A patient has a minute alveolar ventilation of 10 liters/minute. Which of the following
sets of parameters would produce this value?

a. Vt 400 RR 20 VDanat 100 cc
b. Vt 550 RR 20 VDanat 200 cc
c. Vt 1000 RR 20 VDanat 200 cc
d. Vt 650 RR 20 VDanat 150 cc - ANSWER-650 - 150 = 500 x 20 = 10L


d. Vt 650 RR 20 VDanat 150 cc

A patient has the following ABG:

pH 7.28
PaCO2 33
PaO2 90
HCO3 13
SaO2 94%

Which of the following is the correct interpretation of these results?

a. metabolic alkalosis
b. metabolic acidosis
c. respiratory alkalosis
d. respiratory acidosis - ANSWER-b. metabolic acidosis

A patient's actual FEV1 multiplied by 35 will give an estimation of

, a. TLC
b. MVV
c. VC
d. FRC - ANSWER-b. MVV

A patient's FECO2 is .03 and the minute ventilation is 30 LPM. What is the VCO2?

A. .09 LPM
B. 0.9 LPM
C. 9.0 LPM
D. 19 LPM - ANSWER-B. 0.9 LPM

A patient's spirometry results are blow:

FVC: 4.0 liters
FEV1: 3.2 liters
FEF 25-75%: 4.1 L/sec
FEF max: 6.3 L/sex
VT .5 liters
VC 4.0 liters
ERV 1.0 liters
FRC 2.0 liters


Based on these results, what would be the RV/TLC ratio?

a. 20%
b. 25%
c. 30%
d. 35% - ANSWER-a. 20%

a PFT tech has just finished performing a spirometry study using a water-sealed
spirometer. Which of the following pieces of equipment should be sterilized before
performing the next spirometry study?

a. kymograph
b. free breathing valve
c. spirometer bell
d. desiccant - ANSWER-b. free breathing valve

According to ATS/ERS standards, "best test" is defined as:

a. the largest FVC
b. the largest PEFR
c. the largest FEV1
d. the largest sum of FEV1 and FVC - ANSWER-d. the largest sum of FEV1 and FVC

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