Clinical outcome
The follow-up period after ICD implantation in the IVF group with J
point elevations in the 3rd ICS, the IVF group without, and the BrS
group was 118 ± 80 months, 109 ± 61 months, and 105 ± 70 months,
respectively. Two patients in BrS group were treated with bepridil. None
of patients with IVF received antiarrhythmic drugs.
During a follow up of 110 ± 69 months, the recurrence of VF was observed
in 5 of 14 IVF patients with J point elevation in the 3rd ICS (36%), 2
of 21 IVF patients without J point elevation in the 3rd ICS (10%), and
6 of 15 BrS patients (40%). The frequency of VF recurrences was higher
in IVF patients with J point elevation in the 3rd ICS and Brugada
syndrome than IVF patients without J point elevation in the 3rd ICS
(P<0.05 for both). Electrical storm was observed in one of IVF
patient (7%) with J point elevation in the 3rd ICS, none of IVF patient
without J point elevation in the 3rd ICS, and one of BrS patient (7%).
None of the patients died during the follow-up.