We have read, with great interest, the article “Septal ablation with catheters and radiofrequency guided by echocardiography for treatment in patients with obstructive hypertrophic cardiomyopathy (OHC): First experience”, published recently by Valdigem et al. in the journal Arquivos Brasileiros de Cardiologia .
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Septal Ablation with Radiofrequency and the Use of New Technologies in Patients with Hypertrophic Cardiomyopathy in an Electrophysiology Laboratory
ChokrM, MayrinkM, VandoniPMP, LinharesPV, SousaIBS, Castello JúniorHJ, ScanavaccaM. Septal Ablation with Radiofrequency and the Use of New Technologies in Patients with Hypertrophic Cardiomyopathy in an Electrophysiology Laboratory. Arq. Bras. Cardiol. 2022;119(4):634-7.
Chokr,Muhieddine; Mayrink,Marina; Vandoni,Pedro Mario Pinto; Linhares,Pedro Vieira; Sousa,Italo Bruno dos Santos; Castello Júnior,Hélio José; Scanavacca,Mauricio. Septal Ablation with Radiofrequency and the Use of New Technologies in Patients with Hypertrophic Cardiomyopathy in an Electrophysiology Laboratory. Arq. Bras. Cardiol., v. 119, n. 4, p. 634-637, Oct. 2022.
Chokr,M., Mayrink,M., Vandoni,P.M.P., Linhares,P.V., Sousa,I.B.S., Castello Júnior,H.J., & Scanavacca,M. (2022). Septal Ablation with Radiofrequency and the Use of New Technologies in Patients with Hypertrophic Cardiomyopathy in an Electrophysiology Laboratory. Arq. Bras. Cardiol.,119(4), 634-637.
Chokr,Muhieddine and Mayrink,Marina and Vandoni,Pedro Mario Pinto and Linhares,Pedro Vieira and Sousa,Italo Bruno dos Santos and Castello Júnior,Hélio José and Scanavacca,Mauricio. Septal Ablation with Radiofrequency and the Use of New Technologies in Patients with Hypertrophic Cardiomyopathy in an Electrophysiology Laboratory. Arq. Bras. Cardiol. [online]. 2022, vol. 119, n. 4, [cited 2025-10-24], pp.634-637. Available from: <https://abccardiol.org/en/article/septal-ablation-with-radiofrequency-and-the-use-of-new-technologies-in-patients-with-hypertrophic-cardiomyopathy-in-an-electrophysiology-laboratory/>. ISSN 0066-782X.
Figure 1
Carto 3-guided electroanatomic maps of the right and left ventricle. This picture shows the point with the largest septal thickness (25 mm). The points in red represent the region where the radiofrequency was applied. B) Beginning of the application of radiofrequency. The yellow points represent the areas to be avoided in which the conduction system was identified. C) Hyperechogenicity of the septal region, evaluated continually using the intracardiac echocardiogram during the application of radiofrequency. It is possible to identify the catheter in the strap resting on the septal region. D) At the end of the procedure, an intense edema is observed in the septal region, associated with hyperechogenicity near the left ventricle outflow tract.