Due to Dyspnea, a 34-Year-Old Male Is Assessed

Due to dyspnea, a 34-year-old male is assessed. Complete pulmonary function tests and measures of lung capacity are performed on the patient. In the image below, his pulmonary volume curve (blue line) is contrasted with a typical person's curve (black line) : Which of the following measures is increased in this patient?

A) Expiratory reserve volume
B) Forced expiratory volume in 1 second
C) Forced expiratory volume in 1 second/forced vital capacity ratio
D) Forced vital capacity
E) Residual volume/total lung capacity ratio

Correct Answer:

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