Exercise-induced Collapse In A 17 Year Old Female Runner - Page #3

Lab Studies:
Rheumatoid Factor and ANA negative,
Erythrocyte Sedimentation Rate and
Ferritin normal.

Other Studies:
Mannitol powder inhalation bronchial challenge Case Photo #1 shows significantly reduced Forced Expiratory Volume in 1 second (FEV1), at 46% of the predicted value for age/gender, and other abnormal parameters. FEV1 is the most widely used criterion for determining airway obstruction.


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