Adrenergic bronchodilators improve flow rates for which of the following diseases? 1. Asthma 2. Acute bronchitis 3. Chronic bronchitis 4. Pulmonary fibrosis

a. 1 only
b. 1, 2, and 3 only
c. 2, 3, and 4 only
d. 1, 2, 3, and 4

ANS: B
The most common use of these agents clinically is to improve flow rates in asthma (including ex-ercise-induced asthma), acute and chronic bronchitis, emphysema, bronchiectasis, cystic fibrosis, and other obstructive airway states.