in 15 patients with intermittent ventricular preexcitation symptoms the effect of intravenously administered dobutamine ( 10 mcg/kg b.w./min ) on the ecg tracing , effective atrial , a-v nodal and kent bundle refractions as well as the incidence of cardiac arrhythmias were assessed basing on results of the electrophysiologic examination .
C0032915
ventricular preexcitation
C0003811
cardiac arrhythmias