医学
顺时针方向的
法洛四联症
分流(医疗)
四联症
QRS波群
冠状面
外科
心脏病学
内科学
旋转(数学)
解剖
心脏病
几何学
数学
作者
José Suárez de Lezo,José A. Sobrino,Javier Codina,I Maté,Antonio Epeldegui
出处
期刊:Chest
[Elsevier]
日期:1975-10-01
卷期号:68 (4): 548-553
被引量:1
标识
DOI:10.1378/chest.68.4.548
摘要
Vectorcardiograms from 55 patients with diagnosed tetralogy of Fallot were studied and divided into the following three groups: A, 35 nonoperated cases; B, 23 with systemic-pulmonary shunt (nine studied preoperatively and also in A); and C, ten after total correction. In group A, two different types of QRS loop occurred in the horizontal plane (HP); 23 clinically and hemodynamically severe cases had right anterior position with clockwise (C) rotation, and 12 less severe cases had right posterior position with counterclockwise (CC) rotation or figure-8 morphology. In the frontal plane the QRS loop was located interiorly and to the right, with C rotation (80 percent); two cases had the left anterior hemiblock (LAHB) pattern, and another two severe cases had CC rotation and right superior position. Group B had an evident increase of left ventricular forces in the HP, compared with group A; group-B rotation was preferentially CC or figure-8 morphology. Group C had a pattern of right bundle-branch Mock in nine cases (classic in one and uncharacteristic in eight); four cases also had LAHB. Vectorcardiograms from 55 patients with diagnosed tetralogy of Fallot were studied and divided into the following three groups: A, 35 nonoperated cases; B, 23 with systemic-pulmonary shunt (nine studied preoperatively and also in A); and C, ten after total correction. In group A, two different types of QRS loop occurred in the horizontal plane (HP); 23 clinically and hemodynamically severe cases had right anterior position with clockwise (C) rotation, and 12 less severe cases had right posterior position with counterclockwise (CC) rotation or figure-8 morphology. In the frontal plane the QRS loop was located interiorly and to the right, with C rotation (80 percent); two cases had the left anterior hemiblock (LAHB) pattern, and another two severe cases had CC rotation and right superior position. Group B had an evident increase of left ventricular forces in the HP, compared with group A; group-B rotation was preferentially CC or figure-8 morphology. Group C had a pattern of right bundle-branch Mock in nine cases (classic in one and uncharacteristic in eight); four cases also had LAHB.
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