Vector electrocardiographic alterations after percutaneous septal ablation in obstructive hypertrophic cardiomyopathy: possible anatomic causes
| Autor: | Pérez Riera Andrés Ricardo, Cano Silvia Judith Fortunato de, Cano Manuel Nicolás, Gimenez Vera Márcia L., Fleury Neto Luciano Augusto de Padua, Sousa José Eduardo M. R. |
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| Jazyk: | English<br />Portuguese |
| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | Arquivos Brasileiros de Cardiologia, Vol 79, Iss 5, Pp 471-475 (2002) |
| Druh dokumentu: | article |
| ISSN: | 0066-782X 1678-4170 |
| Popis: | OBJECTIVE: Analyze the dromotropic disturbances (vector-electrocardiographic), and the possible anatomic causes, provoked by selective alcohol injection in the septal branch, for percutaneous treatment, of obstructive hypertrophic cardiomyopathy. METHODS: Ten patients with a mean age of 52.7 years underwent percutaneous septal ablation (PTSA) from october 1998; all in functional class III/IV). Twelve-lead electrocardiogram was performed prior to and during PTSA, and later electrocardiogram and vectorcardiogram according to Frank's method. The patients were followed up for 32 months. RESULTS: On electrocardiogram (ECG) prior to PTSA all patients had sinus rhythm and left atrial enlargement, 8 left ventricular hypertrophy of systolic pattern. On ECG immediately after PTSA, 8 had complete right bundle-branch block; 1 transient total atrioventricular block; 1 alternating transient bundle-branch block either right or hemiblock. On late ECG 8 had complete right bundle-branch block confirmed by vectorcardiogram, type 1 or Grishman. CONCLUSION: Septal fibrosis following alcohol injection caused a predominance of complete right bundle-branch block, different from surgery of myotomy/myectomy. |
| Databáze: | Directory of Open Access Journals |
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