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
in Portuguese, English
| LILACS, Sec. Est. Saúde SP
| ID: lil-325517
Responsible library:
BR1.1
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
Full text:
Available
Collection:
National databases
/
Brazil
Database:
LILACS
/
Sec. Est. Saúde SP
Main subject:
Vectorcardiography
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Cardiomyopathy, Hypertrophic
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Bundle-Branch Block
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Catheter Ablation
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Ethanol
/
Heart Septum
Type of study:
Etiology study
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
English
/
Portuguese
Journal:
Arq. bras. cardiol
Year:
2002
Document type:
Article
Institution/Affiliation country:
Instituto Dante Pazzanese de Cardiologia/BR