berotec ( 0.4 mg fenoterol hydrobromide , regimen b ) , atrovent ( 0.08 mg ipratropium bromide , regimen a ) and duovent ( 0.2 mg fenoterol hydrobromide and 0.08 mg ipratropium bromide , regimen d ) were administered by metered dose inhalers ( mdi ) to 12 patients with asthma ( regimens d and b only ) and 12 patients with chronic airflow obstruction ( cao ) .
C0591130
atrovent
C0700580
ipratropium bromide