Key result
Alcohol septal ablation is linked to frequent conduction abnormalities, most commonly RBBB in ~61%.
Why the study?
Conduction abnormalities are commonly noted after alcohol septal ablation, but their incidence and characteristics require further study.
What is the incidence of new onset conduction abnormalities post alcohol septal ablation in patients with hypertrophic cardiomyopathy?
Observational (n=23)
No
What is the incidence of new onset conduction abnormalities post alcohol septal ablation in patients with hypertrophic cardiomyopathy?
Conduction anomalies, particularly right bundle branch block, are frequent complications following alcohol septal ablation for hypertrophic cardiomyopathy.
Frequent post-ASA conduction abnormalities warrant close ECG monitoring; leaves open optimal risk stratification in larger prospective cohorts.
Conduction abnormalities are commonly noted after alcohol septal ablation (ASA). This was a retrospective, observational study where we studied the incidence of new onset conduction abnormalities post ASA. 23 patients, who underwent ASA over a period of 5 years, were included in the study. Baseline conduction abnormalities were noted in 26% patients (n = 6). Transient complete heart block (CHB) was noted in 21.7% (n = 5) whereas new onset right bundle branch block (RBBB) was seen in 60.8% (n = 14). Left bundle branch block was uncommon (4.3%,n = 1). Permanent pacemaker implantation was done in 4.3% (n = 1) for CHB. Conduction anomalies are frequent after ASA with RBBB being most common.
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Mani et al. (2021) conducted an observational in Hypertrophic cardiomyopathy (n=23). Alcohol septal ablation (ASA) was evaluated on Incidence of new onset conduction abnormalities. Alcohol septal ablation was frequently associated with new onset conduction abnormalities, most commonly right bundle branch block (60.8%) and transient complete heart block (21.7%).
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