Limitations
Firstly, this study was carried out in a single tertiary center and the
follow-up period was relatively short. Secondly, limited by the small
sample size, further analysis such as multiple linear regression was not
performed. Thirdly, there was no comparison with surgery or ASA, but
noninferiority in effectiveness and safety was noticed with previous
studies.13 Fourthly, there was no assessment of
regional wall motion during follow up due to minimal septal ablation
area. However, because of significant thickness of LV septum, RF lesion
within SAM area was so shallow that might result in less hypokinesis
there.