A 16-year-old patient is in the emergency room receiving nasal oxygen. She has a heart rate of 135/min, a respiratory rate of 40/min, and a peak expiratory flow (PEF) less than 50% of the predicted value. Wheezing and rales are audible without a stethoscope.
Drugs that can dilate bronchi during an acute asthmatic attack include all of the following EX-
Mast cell stabilizer (nedocromil nor cromolyn) prevent degranulation of mast cell. They are indicated for prophylaxis of bronchial asthma. It is of no use once acute attack has occurred.