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PFT Final Exam with Complete Solutions
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PFT Final Exam with Complete Solutions
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PFT Final Exam with Complete Solutions_______ provides a NIV means of meausring eosinophillic inflammtion of the airways
and may be useful in the diagnosis and management of diseases characterized by
inflammtion such as asthma - ANSWER-FENO
a 15 year old subject performs an excercise challenge test on a treadmill to a heart rate
of 180 bpm for 5 minutes and has the following reproducible results - ANSWER-The
results were positive for exercise induced bronchospasm
A 22 year old patient with dyspnea performs three spirometry trials the PFT tech should
do which of the following? - ANSWER-Perform at least one more maneuver
a 56 year old male weighing 100kg excercised on a cycle ergometer. His VO2 max was
2.8L. How many mets of work did he perform - ANSWER-8 mets
A bellows type spirometer is calibrated using a 3L syringe and the follwoing data -
ANSWER-Sticking bellows
a dry rolling seal spirometer is checked by injecting 3l volumes at different flows (high,
medium, and low) with the following results - ANSWER-Rolling seal is sticking or
leaking
A healthy adult subject who weighs 160 pounds has a VE of 8.0 l/min BTPS and a
respiratory rate of 12/min. His VA can be estimated as - ANSWER-6.0
A nonsmoking subject performs two DLCOsb manuevers and the following results are
obtained
Test 1 24.3 mlCO/min/mmhg
Test 2 18.7 ml CO/min/mmhg
Which of the following is appropriate? - ANSWER-Performing an additional maneuver
A patient has a vital capacity of 4200 a function residual capacity of 3300 and an
expiratory reserve volume of 1500. What is the residual volume? - ANSWER-1800
A patient has an expired minute ventilation of 14.2 L and a vent rate of 25/min. What is
the average VT - ANSWER-568Ml
A patient has the following results from a PFT
VC 4.35
IC 3.15
ERV 1.20
FRCHe 3.40
What is the pts RV and RV/TLC ratio? - ANSWER-2.20 and 34%
, A patient to be methacholine tested should ________ prior to testing - ANSWER-All of
the above
A patient with a history of COPD is being evaluated fir disbaility. His FEV1 is 1.44 (43%
of predicted) and his DLCO is 14.5 (61% of predicted). Which of the following tests is
most appropriate to perform next> - ANSWER-Post bronchodilator spirometry
A patient with an FEV1 65% of predicted would be considered what severity of
obstruction? - ANSWER-Moderate
A patient with COPD has been diffiuclt to wean from MV. To minimize CO2 production
the caloric intake of the patient should consist mainly of - ANSWER-Fat
A positive response to a manitol test is - ANSWER->15% fall in FEV1 from baseline or
>10% incremental fall in FEV1 between 2 consecutive doses of mannitol
A subject being tested for possible environmental exposure to asbestos produces the
following spirometery results - ANSWER-The patient did not make a good effort on the
MVV
A subject has a VE/VO2 of 44 at rest before beginning an excercise test. Which of the
following best explains this value? - ANSWER-Hyperventilation
A subject has an FVC of 1.8 L (39% of predicted). The same individual has a slow VC of
2.7 L. Which of the following might explain these findings? - ANSWER-1. Airway
compression in obstructive lung disease
2. Poor effort or early termination of the FVC
A subject performed a methacholine challenge test has the follwoing reproducible
results - ANSWER-Adminster the lowest concentration dose of methacholine
A subject performing a methacholine challenge test has teh following reproducible
results - ANSWER-Stop the test is positive
A subject who complains of SOB has an FVC of 2.57L but her VC is 2.99L. These
findings suggest which of the following? - ANSWER-Emphysema
Accurate meausrement of MIP and MEP depends on largely on - ANSWER-Patient
effort
After 5 minutes of hyperventilation breathing cold air a subjects FEV1 falls 16% from teh
pretest value. The pulmonary function tec should conclude that - ANSWER-The subject
has hyperactive airways
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