The Effect of Isoproterenol Sulfate Aerosol on the Small Airways in Asymptomatic Asthmatic Patients

In 19 asymptomatic asthmatic patients the effect of isoproterenol sulfate aerosol on small airways was assessed. All patients were symptom-free for at least three days before the investigation. On the day of examination, before inhalation of isoproterenol, the total lung resistance (RL) was normal,...

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