the new broncholytic 7- ( 3- [ 2- ( 3,5-dihydroxyphenyl ) -2-hydroxy-ethylamino ] -propyl ) -theophylline ( reproterol , bronchospasmin ) , a beta-phenylethyl-aminoalkyl-xanthine , was investiggated in two doses ( 60 and 90 mug i.v . ) in patients who suffered from bradycardic arrhythmia .
C0039771
theophylline
C0428977
bradycardic