{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,2]],"date-time":"2025-10-02T18:41:25Z","timestamp":1759430485404,"version":"build-2065373602"},"reference-count":18,"publisher":"IMR Press","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["HSF"],"abstract":"<jats:p>Background: Percutaneous transluminal septal myocardial alcohol ablation (PTSMAA) is not a procedure without complications. It may produce heart arrhythmias, especially those due to disturbances of atrioventricular (AV) and interventricular (IV) electrical conduction.Objective: The goal of this study was to evaluate the relationship between the anatomical patterns of the right coronary artery and the left anterior descending artery (LAD) and to relate them to the AV and IV bundle branch blocks provoked by PTSMAA.Method: Twenty patients with obstructive hypertrophic cardiomyopathy resistant to treatment with drugs successfully underwent PTSMAA. Electrocardiographic analyses were done before and after PTSMAA, and the results were compared with the abnormal septal anatomy.Results: The effectiveness of PTSMAA was obtained in 18 (90%) of the 20 patients by ethanolization of the first great septal branch. In the other 2 patients (10%), 2 septal branches underwent alcoholization. First-grade temporary AV block (AVB) was observed in 6 patients (30%). Ten patients experienced severe bradycardia due to total AVB that required a temporary pacemaker, but 3 of the patients (15%) required a permanent pacemaker. Fourteen patients (70%) experienced permanent complete right branch block, and 2 developed incomplete left anterior block and incomplete left posterior block. Six patients presented with no electrical conduction disturbance at all.Conclusion: According to the results of the present investigation with the AV node artery derived from the right coronary artery in all cases, complete and permanent AV conduction system blockade occurred after PTSMAA in all types of anatomy regarding the observed LAD.<\/jats:p>","DOI":"10.1532\/hsf98.20091133","type":"journal-article","created":{"date-parts":[[2010,2,16]],"date-time":"2010-02-16T21:05:34Z","timestamp":1266354334000},"page":"45","source":"Crossref","is-referenced-by-count":2,"title":["Coronary Morphology and Conduction System Disturbance Induced by Therapeutic Embolization of the Coronary Septal Artery"],"prefix":"10.31083","volume":"13","author":[{"given":"Otoni M.","family":"Gomes","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ant\ufffdnio Alves","family":"Coelho","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Evandro C\ufffdsar Vidal","family":"Osterne","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rafael Diniz","family":"Abrantes","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"16242","published-online":{"date-parts":[[2010,2,11]]},"reference":[{"key":"1","doi-asserted-by":"crossref","first-page":"319","DOI":"10.1111\/j.1540-8183.2006.00153.x","article-title":"Alcohol septal ablation for obstructive cardiomyopathy: a systematic review of published studies","volume":"19","author":"M Alam","year":"2006","journal-title":"J Interv Cardiol"},{"key":"2","doi-asserted-by":"crossref","first-page":"643","DOI":"10.1016\/S0735-1097(10)80177-9","article-title":"Surgical versus medical treatment of hypertrophic cardiomyopathy: Is the perspective changing?","volume":"17","author":"R Chahine","year":"1991","journal-title":"J Am Coll Cardiol"},{"key":"3","doi-asserted-by":"crossref","first-page":"296","DOI":"10.1016\/S0735-1097(03)00623-5","article-title":"Complete heart block: determinants and clinical impact in patients with hypertrophic obstructive cardiomyopathy undergoing nonsurgical septal reduction therapy","volume":"42","author":"S Chang","year":"2003","journal-title":"J Am Coll Cardiol"},{"key":"4","unstructured":"Coelho AA. 2008. Preditores angiogr\u00e1ficos de altera\u00e7\u00f5es eletrocardiogr\u00e1ficas ap\u00f3s abla\u00e7\u00e3o septal percut\u00e2nea [master's thesis]. Belo Horizonte, MG, Brazil: Funda\u00e7\u00e3o Cardiovascular S\u00e3o Francisco de Assis Verdade \u00e9 Jesus; November 2008."},{"key":"5","first-page":"325","volume-title":"Tratado de anatomia aplicada","author":"L Didio","year":"2002"},{"issue":"2","key":"6","article-title":"Diretriz de interpreta\u00e7\u00e3o de eletrocardiogramade repouso","volume":"80","author":"J Guimar\u00e3es","year":"2003","journal-title":"Arq Bras Cardiol"},{"key":"7","doi-asserted-by":"crossref","first-page":"2075","DOI":"10.1161\/01.CIR.95.8.2075","article-title":"Nonsurgical septal reduction for hypertrophic obstructive cardiomyopathy: outcome in the first series of patients","volume":"95","author":"C Knight","year":"1997","journal-title":"Circulation"},{"key":"8","doi-asserted-by":"crossref","first-page":"846","DOI":"10.1093\/oxfordjournals.eurheartj.a015350","article-title":"Induction of subaortic septal ischaemia to reduce obstruction in hypertrophic obstructive cardiomyopathy. 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Experi\u011bncia inicial no Distrito Federal","volume":"80","author":"E Osterne","year":"2003","journal-title":"Arq Bras Cardiol"},{"key":"12","first-page":"116","article-title":"Evolu\u00e7\u00e3o em curto e m\u00e9dio prazo de pacientes submetidos \u00e0 abla\u00e7\u00e3o septal com \u00e1lcool no Distrito Federal","volume":"12","author":"E Osterne","year":"2004","journal-title":"Rev Bras Cardiol Invas"},{"key":"13","first-page":"1994","article-title":"Outcome of patients with hypertrophic obstructive cardiomyopathy after percutaneous transluminal septal myocardial ablation and septal myectomy surgery","volume":"38","author":"J Qin","year":"2001","journal-title":"J Am Coll Cardiol"},{"key":"14","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1016\/0002-8703(61)90324-6","article-title":"The descending septal artery in human, porcine, equine, ovine, bovine and canine hearts. 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