,Since there was no evidence for dual AV nodal pathways, and poor retrograde conduction, isoproterenol infusion was not performed to look for SVT.,Programmed ventricular stimulation was performed at both right ventricular apex and right ventricular outflow tracts. 
,Since there was no evidence for dual AV nodal pathways , and poor retrograde conduction , isoproterenol infusion was not performed to look for SVT.,Programmed ventricular stimulation was performed at both right ventricular apex and right ventricular outflow tracts .