A patient has just finished a 6-minute walk test during which she stopped and rested by leaning against a wall several times, while catching her breath. Which of the following should a pulmonary function technologist do?

A pulmonary function technologist reviews the following home monitoring spirometry results:

According to National Asthma Education and Prevention Program (NAEPP) guidelines, what feedback should the technologist give to the patient regarding test performance?

Results of two blood gas samples drawn from the same patient, 30 minutes apart, are shown below:

Which of the following is the most likely explanation for these differences?

Successive peak flow measurements made with a peak flowmeter on a subject previously diagnosed as having asthma yield the following results:

Which of the following is the best explanation for these?

When performing exercise testing on a biologic control, the measurements obtained should be compared with