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[Left bundle branch block analysis by body surface mapping. Comparison with electrocardiographic and vectocardiographic findings]. 1996

C A Pastore, and P J Moffa, and N M Tobias, and A P de Moraes, and E Kaiser, and M A Cuoco, and A Mansur, and G Granado, and M del C Sanchez, and G Bellotti, and F Pileggi
Instituto do Coração do Hospital das Clínicas, FMUSP.

OBJECTIVE To compare the correlation between the departure areas (DA), negative or positive, in patients whose electrocardiogram showed left bundle branch block (LBBB) and association with left ventricular hipertrophy (LVH) and myocardial infarction (MI), to the electrocardiographic (ECG) and vectocardiographic (VCG) classic criteria. METHODS The study was carried out with 46 patients (27 males) with LBBB. These patients had hypertension (19.5%), coronary heart disease (34.7%) and 21 patients with no heart disease (45.8%). RESULTS The statistic analysis using the Cluster method divided the patients in two groups. Group I (22 patients) showed an average rate for the DA (-2 SD) of 1091 for QRS and of 640 for ST-T. For the DA (+2 SD), the average rate was 618 for QRS and 881 for ST-T; group II (24 patients) showed an averaged for the DA (-2 SD) of 1063 for QRS and of 225 for ST-T. For the DA (+2 SD), the averaged rate was 428 for QRS and 600 for ST-T. CONCLUSIONS In general the current ECG/VCG findings, can not differentiate the presence of the association of LBBB to LVH and MI. The DA of ST-T, mainly negative was the most efficient to separate the two groups and help in the differential diagnosis.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D002037 Bundle-Branch Block A form of heart block in which the electrical stimulation of HEART VENTRICLES is interrupted at either one of the branches of BUNDLE OF HIS thus preventing the simultaneous depolarization of the two ventricles. Fascicular Block,Anterior Fascicular Block,Bundle Branch Block,Left Bundle-Branch Block,Posterior Fascicular Block,Right Bundle-Branch Block,Anterior Fascicular Blocks,Block, Anterior Fascicular,Block, Bundle Branch,Block, Bundle-Branch,Block, Fascicular,Block, Left Bundle-Branch,Block, Posterior Fascicular,Block, Right Bundle-Branch,Blocks, Anterior Fascicular,Blocks, Bundle Branch,Blocks, Bundle-Branch,Blocks, Fascicular,Blocks, Left Bundle-Branch,Blocks, Posterior Fascicular,Blocks, Right Bundle-Branch,Branch Block, Bundle,Branch Blocks, Bundle,Bundle Branch Blocks,Bundle-Branch Block, Left,Bundle-Branch Block, Right,Bundle-Branch Blocks,Bundle-Branch Blocks, Left,Bundle-Branch Blocks, Right,Fascicular Block, Anterior,Fascicular Block, Posterior,Fascicular Blocks,Fascicular Blocks, Anterior,Fascicular Blocks, Posterior,Left Bundle Branch Block,Left Bundle-Branch Blocks,Posterior Fascicular Blocks,Right Bundle Branch Block,Right Bundle-Branch Blocks
D003937 Diagnosis, Differential Determination of which one of two or more diseases or conditions a patient is suffering from by systematically comparing and contrasting results of diagnostic measures. Diagnoses, Differential,Differential Diagnoses,Differential Diagnosis
D004562 Electrocardiography Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY. 12-Lead ECG,12-Lead EKG,12-Lead Electrocardiography,Cardiography,ECG,EKG,Electrocardiogram,Electrocardiograph,12 Lead ECG,12 Lead EKG,12 Lead Electrocardiography,12-Lead ECGs,12-Lead EKGs,12-Lead Electrocardiographies,Cardiographies,ECG, 12-Lead,EKG, 12-Lead,Electrocardiograms,Electrocardiographies, 12-Lead,Electrocardiographs,Electrocardiography, 12-Lead
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000369 Aged, 80 and over Persons 80 years of age and older. Oldest Old

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