Table 2

Procedural Outcomes After Alcohol Septal Ablation in 107 Patients Age ≤55 Years and 110 Patients Age >55 Years

ASA ≤55 yrs
(n = 107)
ASA >55 yrs
(n = 110)
p Value
Periprocedural (<30 days) complications
 New right bundle branch block42 (39%)39 (36%)0.66
 (Temporary) atrioventricular block22 (21%)47 (43%)0.001
 Permanent pacemaker implantation5 (5%)14 (13%)0.063
 ICD implantation15 (14%)11 (10%)0.48
 Adverse arrhythmic events8 (8%)8 (7%)1.0
 Mortality2 (2%)0 (0%)0.24
Procedure efficacy
 Residual LVWT >3 months post-procedure, mm14 ± 514 ± 40.45
 Residual LVOT gradient >3 months post-procedure, mm Hg12 ± 2710 ± 270.99
 Reduction in LVOT gradient >3 months post-procedure, %78 ± 6076 ± 600.68
 NYHA functional class III/IV >3 months post-procedure5 (5%)9 (9%)0.43
 Redo septal reduction therapy14 (13%)13 (12%)0.94

Values are n (%) or mean ± SD.

ICD = internal cardioverter defibrillator; other abbreviations as in Table 1.