A 10-Year-Old African-American Boy (Height: 47 Inches)performs Spirometry,and the Following

A 10-year-old African-American boy (height: 47 inches) performs spirometry,and the following results are recorded: Which statement best explains these findings?

A) There is a restrictive pattern,and lung volumes are indicated.
B) There is an obstructive pattern,and a bronchodilator study is needed.
C) There is an obstructive pattern,and a methacholine challenge is indicated.
D) The values are within normal limits.

Correct Answer:

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