A 36-year-old female patient has been complaining of shortness of breath.  She has worked in a textile factory for 15 years.  The following PFT values are hers.  What would be the correct evaluation for this patient?       TESTS                   ACTUAL             PREDICTED             %PREDICTED       FVC                          2.38                       3.9                              61%       FEV1                        1.83                        2.9                              63%       FEV3                        2.24                        3.7                              61%       FEV1/FVC %           77%                       74%                             ——       FEF25%-75%              2.5                          4.2                              59%       MVV                         76                           96                              79%       RV                            .61                           .97                             63%       TLC                          2.99                        4.85                            62%       DLCO                      6.8                           8.9                              76%

Which of the following components are provided by pulmonary function testing?  Lung volumes/capacities  Pulmonary (airway) mechanics  Diffusion capacity of the lungs  Distribution of ventilation/perfusion

What would you use to determine the accuracy of a bedside spirometer in measuring lung volumes?  Calibrated high-flow flowmeter.  Computer-generated flow patterns.  Calibrated 3-L syringe.   Standard subject with known volumes.

Which of the following provocation dosage represents a positive response to a methacholine challenge test? (1)  PD6FEV1 = 0.12 mg/ml (2)  PD12FEV1 = 0.24 mg/ml (3)  PD15FEV1 = 0.96 mg/ml (4)  PD22FEV1 = 3.8 mg/ml

To ensure validity of the forced vital capacity (FVC) measurement, how many attempts should the patient perform?        

Which of the following describes the flow-volume loop (purple line) shown above?  Variable intrathoracic upper airway obstruction.  Fixed upper airway obstruction.  Unilateral main-stem obstruction.  Variable extrathoracic upper airway obstruction.

Which of the following are considered as pulmonary (airway) mechanics? (Multiple Answers) FEF/FEF FVC FRC FEVT MVV

Which of the following statement about FEV1 measurements are true? (Multiple Answers) It is a measurement of volume. The recorded FEV1 must come from the best FVC effort. It is often compared to the size of the FVC. It is expelled in the first second of the FVC maneuver.

What conclusions can you draw from the following data, obtained from a 45-year-old man who admits to “occasional smoking” but otherwise reveals no past history of pulmonary problems? TESTS             ACTUAL          PREDICTED            %PREDICTED  FVC                   3.35                     3.83                          87% FEV1                  2.62                     3.05                          86% FEV1/FVC%      78%                     80%                          —— FEF200-1200       4.43                     5.45                          81% FEF25-75%          1.95                     3.37                          58% TLC                    4.75                     4.90                          97% FRC                    2.31                     2.21                         105% RV                      3.48                     3.63                          96%

When used to determine functional residual capacity, the body plethysmograph operates on which of the following physical principles?