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Test: |
The patient will be asked to pedal on a stationary bicycle for as long as s/he can while breathing into a machine.
The patient will pedal for approximately 10 minutes. A small thin tube (similar to an IV) will be placed in an artery (either at the wrist or the elbow) to allow samples of blood (2 mL or 1 teaspoon) to be taken throughout the exercise test.
Then, the patient will perform a test in the sitting position while breathing oxygen and an additional blood sample will be taken. After a 30-minute rest period, the patient will perform a second shorter exercise on the bicycle.
During this test, the patient will be asked to breathe in deeply and then to breathe out forcefully through a mouthpiece into a recording device. |