Modificações eletrovetorcardiográficas após ablaçäo septal percutânea na cardiomiopatia hipertrófica obstrutiva e possíveis causas anatômicas / Vector electrocardiographic alterations after percutaneous septal ablation in obstructive hypertrophic cardiomyopathy. Possible anatomic causes
Arq. bras. cardiol
;
79(5): 466-475, nov. 2002. ilus, tab
Article
Dans Portugais, Anglais
| LILACS, SES-SP
| ID: lil-325517
ABSTRACT
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
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Vectocardiographie
/
Cardiomyopathie hypertrophique
/
Bloc de branche
/
Ablation par cathéter
/
Éthanol
/
Septum du coeur
Type d'étude:
Etude d'étiologie
Limites du sujet:
Adulte
/
Femelle
/
Humains
/
Mâle
langue:
Anglais
/
Portugais
Texte intégral:
Arq. bras. cardiol
Année:
2002
Type:
Article
Institution/Pays d'affiliation:
Instituto Dante Pazzanese de Cardiologia/BR
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