A member asked:

What's to be expected? might ventolin work at all if you have an asthma attack whilst taking beta blockers?

A doctor has provided 1 answer
Dr. John Chiu answered

Less so: Ventolin may still work but would likely be less effective. It is also important to choose a cardio-selective beta blocker if there is no other alternative. One study showed that taking a cardio-selective beta blocker reduced the fev-1 (the one-second airflow which is reduced in airway obstruction) by about 7% but made the lung more responsive to bronchodilators . Avoid beta blocker if possible.

Answered 7/25/2013

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