in patients with vpbs ( n = 20 ) , tiapamil ( i.v . injection of 1 mg/kg followed by 4-hour i.v . infusion of 50 micrograms/kg/min in 10 patients ) reduced ectopic beats by 30-50 % in 6 cases , these all being patients who had not responded to previous antiarrhythmic therapy .
C0151636
vpbs
C0340464
ectopic