Blind randomized cross-over comparative study of salbutamol and the combination fenoterol-ipratropium IK6 in patients with bronchial asthma.

A blind randomized cross-over comparative study of salbutamol and the combination fenoterol/ipratropium was carried out in 20 patients with mild to moderate bronchial asthma; clinical and functional serial parameters were evaluated. The combination was more effective than salbutamol in preventing crisis and incidence of cough and wheezing, and in the spirometric results. There were no significant differences in expectoration and the functional parameters improved not only in flow but also in volume. Pathogenesis is discussed.