Procedural characteristics
The mean procedural time was 172 + 83 minutes. The mean time taken from the initiation of radiofrequency energy application to block in AP conduction was 4.96 + 2.98 seconds (Table 1).
Adenosine administration at 10 minutes was positive in 3 cases (2.7%), negative in 99 cases (90%), and indeterminate in 8 cases (7.3%). (Central illustration)
Reconnection of the accessory pathway at 30 minutes post-ablation was seen in 8 patients (7.3%). Of these, adenosine at 10 minutes showed positive results (evidence of intermittent pathway conduction) in 3 patients. (Table 2) In the other 5 patients, the adenosine test at 10 minutes was negative (no pathway conduction). Thus, adenosine test at 10 minutes has a sensitivity, specificity, positive predictive value, and negative predictive value of 37.5%, 100%, 100%, and 94.9% in identifying the recurrence of accessory pathway conduction at 30 minutes, respectively (Central illustration). In 8 patients who had accessory pathway reconnection at 30 minutes, pathway location was left lateral in 5 patients, CS in 2, and midseptal in 1 patient (Table 3). Of these 8 patients, 6 had bidirectional conduction, antegrade only conduction in 1 patient, and concealed conduction in 1 patient.