The following test results are available for a 35-year-old subject who is applying for disability:

These findings are consistent with

The following results are obtained from an adult patient:

Which of the following is the best interpretation of these values?

Which of the following may cause a reduction in end-tidal CO2?

The following results were obtained from spirometry before and after a bronchodilator administration:

Which of the following is the correct interpretation of these data?

A biologic control subject has a FRCplethof 4.0 +-0.3 L at panting frequencies between 60 and 70/min. During a QC run, the subject pants at55/min and a FRCplethof 3.90 L is recorded.
Which of the following is the most appropriate action to take?