Exam 5: Pulmonary Function Measurements

What is the normal amount of FVC expired during FEV? in a healthy adult?

Which of the following values indicates significant airway obstruction?

Which of the following conditions are associated with restrictive pulmonary disease? I.Fibrotic lung disease II.ARDS III.Skeletal deformities IV.Asthma

Which of the following methods to measure gas in the lungs is based on Boyle's law?

Which of the following explains the lack of response to bronchodilators by some patients with severe emphysema?

Which of the following methods allows measurement of gas in the lung of a patient with obstructed airways? I.Helium dilution II.End-tidal CO₂ III.Nitrogen washout IV.Body plethysmography

Which of the following conditions define a restrictive impairment?

Which of the following is the major feature of pulmonary restrictive disease?

Which of the following conditions define an obstructive impairment?

The MMV is relatively unaffected by which of the following respiratory conditions?

Which of the following is the major feature of pulmonary obstructive disease?

Which of the following tests is considered the most sensitive for early detection of abnormal small airways resistance?

A 52-year-old woman who was diagnosed with pulmonary emphysema 7 years ago and who smokes two packs of cigarettes a day is brought to the emergency department.She complains of having the flu 2 weeks earlier and that her breathing has become more difficult since then.Her pulmonary function test reveals the following results: Predicted Actual Percent of Predicted 4.67 4.00 86\% 3.52 1.23 35\% / More than 75\% 31\% - (A value equal to or greater than 80% of the predicted value is considered normal.) What condition do these pulmonary function results suggest?

Which of the following are features of plethysmography? I.It is quite rapid. II.Successive FRC measurements can be made. III.It measures ventilated air space. IV.It measures nonventilated air space.

Which of the following concepts apply to FVC? I.It is the most frequently performed pulmonary function test. II.It provides much information about large and small airway function. III.It is an effort-dependent test. IV.A test is assumed valid if the person can repeat three FVC maneuvers with a variation no greater than 10%.

The ability to generate high flow rates depends on which of the following factors? I.Muscle strength II.Airway patency III.Neurological function IV.Diaphragmatic function

Which of the following mechanisms primarily explains the increased WOB in restrictive diseases?

Which of the following values cannot be directly measured?

According to the GOLD guidelines, a patient with COPD is classified as stage III (severe) in the presence of which of the following spirometric values?

A pulmonary function study is performed on a 68-year-old man suspected of having emphysema.The physician requests that the study be performed to measure FRC. Upon completion of both the helium dilution and body plethysmography it is found that the FRC obtained via body plethysmography is higher than that obtained via helium dilution.What is the probable explanation for the difference in obtained FRC values?