Vital capacity is decreased, timed vital capacity (FEV 1.0 %) is normal in:: (A) Bronchial asthma, (B) Scoliosis, (C) Chronic bronchitis, (D) Acute bronchitis
Answer is B. Vital capacity and timed vital capacity (TVC) are reduced greatly in respiratory diseases like Asthma, Emphysema, Pneumonia, etc.
In scoliosis, vital capacity is reduced, but TVC is normal.