Abstract
To determine the efficacy and safety of single doses of subcutaneous terbutaline (TERB) or nebulized albuterol (ALB) during out-of-hospital treatment for respiratory distress from asthma or chronic obstructive pulmonary disease. Patients aged > 18 years who had respiratory distress were enrolled in a double-placebo, double-blind, randomized trial. Paramedics measured respiratory severity using an empiric score [respiratory rate, wheezing, speech, and peak expiratory flow rate (PEFR)], and the patients rated their own respiratory distress using a visual analog scale (VAS). The patients received O2 plus ALB (2.5 mg) and saline injection (n = 40) or TERB (0.25 mg) and saline aerosol (n = 43). The groups were similar with respect to age, gender, initial empiric scores (median score 9 for both groups), PEFRs (89 +/- 84 L/min, mean +/- SD, for ALB vs 97 +/- 84 L/min for TERB), and respiratory distress VAS scores. Both groups showed significant improvement in their respiratory distress VAS scores by the time of ED arrival. The ALB group had a greater improvement in respiratory distress VAS score than did the TERB group (p < 0.05). Empiric scores, PEFR scores, and hospital admission frequencies were not significantly different. No complication was observed. The out-of-hospital administration of either aerosolized ALB or subcutaneous TERB reduced respiratory severity. Albuterol provided greater subjective improvement in respiratory distress.
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