Long duration of airway but not systemic effects of inhaled formoterol in asthmatic patients.
RATIONALE: Formoterol is approved as asthma rescue medication in many countries. The exact duration of the airway vs. systemic effects of formoterol compared with another rescue medication, salbutamol, has not been evaluated. OBJECTIVE: To assess the duration of airway bronchodilatory effects vs. systemic effects of inhaled formoterol and salbutamol in asthmatic patients. METHODS: Twenty-six patie