A 12-year-old patient completed an evaluation for exercise-induced asthma in the pulmonary function laboratory. The patient completed six minutes of exercise on a treadmill with a heart rate of 145 to 150/min. The following spirometry data werecollected:

A pulmonary function technologist should conclude that the exercise test is

A pulmonary function technologist is performing quality control on a nebulizer used in the 5breath dosimeter bronchial challenge. The target output of the device is 0.09 mL, plus or minus 10%. After 10 actuations, the nebulizer output was 75uL with a 2.0 mL initial saline dose in the nebulizer. The technologist should

Using a peak flowmeter, a pulmonary function technologist obtains the following:

The technologist should

Which of the following is an appropriate reason to perform a multiple-breath nitrogen washout test?

Which of the following information reported from a recent methacholine challenge test best summarizes the patient's bronchial hyperresponsiveness?