Results:
Sixty-seven patients were included(mean age 53±18years, 57% female and
a history of SVT 2.9±4.7years). RF(50w,60degrees) ablation for AVNRT was
applied in 301 locations with JR in 178(59%). Successful slow pathway
modification was achieved in 66(99%) patients with slow pathway block
in 30(46%). Success was associated with JR in all patients. Success was
achieved in 6 patients with RF<10 seconds. There was no
significant difference in the CL of JR during RF between
effective(587±150ms) vs ineffective (611±193ms,p=0.4) applications.
Inadvertent JA block with immediate termination of RF was observed in
19(28%) patients with AVNRT no longer inducible in 14(74%). Freedom
from SVT was achieved in 66(99%) patients at a mean follow up of 15±6
months.