Fatores clínicos e eletrocardiográficos relacionados ao circuito do flutter atrial / Clinical and electrocardiographic factors related to the atrial flutter circuit
Rev. SOCERJ
;
20(3): 212-218, mai.-jun. 2007. ilus, tab
Article
in Portuguese
| LILACS
| ID: lil-458340
RESUMO
Objetivos:
definir fatores e/ou eletrocardiográficos relacionados à localização do circuito do flutter atrial (FLA). Verificar a taxa de sucesso imediato e de recorrência a curto e médio prazos.Métodos:
95 pacientes não-consecutivos, portadores de FLA, submeteram-se a estudo eletrocardiológico e ablação por cateter. Foram estratificados em dois grupos Grupo I80 pacientes (84,2 por cento ) com FLA istmo-dependente, idade média de 66 maior ou menor 17 anos, sendo 68 (85 por cento) do sexo masculino. Grupo II 15 pacientes (15,8 por cento) com FLA não-istmo-dependente, idade média 73 maior ou menor 14 anos, sendo 3 (33 por cento) do sexo masculino. As seguintes variáveis foram analisadas presença de cardiopatia, documentação de FLA típico, taxa de sucesso imediato, taxa de recorrência. Para a análise estatística foi utilizado o teste exato de Fischer.Resultados:
No Grupo I havia cardiopatia estrutural em 25 pacientes (35 por cento) e em 71 (88,7 por cento) havia FLA típico ao ECG. Todos os pacientes obtiveram sucesso e a taxa de recorrência foi de 3,75 por cento (3 pacientes)....ABSTRACT
Objective:
To define clinical and/or electrocardiography factors related to the location of the atrial flutter circuit(AF), ascertaining immediate success and recurrence rates over the short and medium terms.Methods:
95 non-consecutive patients with AF underwentan electrophysiological study and catheter ablation, stratified into two groups Group I eighty patients(84.2%) with isthmus dependent AF; average age 66±17 years; 68 (85%) men. Group II fifteen patients (15.8%)com non-isthmus dependent AF; average age 73±14 years; five (33%) men. The following variables were analyzed presence of cardiopathy; documented typical AF; immediate success rate; recurrence rate. Fischers exact test was used for the statistical analysis.Results:
Group I − structural cardiopathy in 25 patients (35%) and 71 (88.7%) with typical AF in the ECG. All patients attained success and the recurrence rate was 3.75% (three patients). Group II − structural cardiopathy in ten patients (66.6%) and three patients (20%) had typical AF in the ECG. Critical points of the arrhythmiacircuit AE (n=5 33.2%); AD (n=9 - 60%) (side wall and interatrial septum) and coronary sinus (n=1 6.7%). Nosuccess − one patient (6.7%); recurrence rate − 14.2% (two patients). The presence of cardiopathy presented significant correlation with Group II (non-isthmus AF), and records of typical AF / ECG were related to Group I isthmus AF (p<0.05).Conclusions:
For patients with AF, the presence of structural cardiopathy suggests the mechanism wouldbe non-isthmus, and records of typical AF / ECG suggest an isthmus macroreentry mechanism.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Atrial Flutter
/
Catheter Ablation
Limits:
Aged
/
Humans
/
Male
Language:
Portuguese
Journal:
Rev. SOCERJ
Journal subject:
Cardiology
Year:
2007
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Hospital Pró-Cardíaco/BR
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