[False tendons of the left ventricle associated with vectorcardiographic changes. Preliminary study].
False tendons are not simply a curiosity discovered on echocardiographic examination or at autopsy. These fibromuscular structures might be connective bundles which contribute to intraventricular activation. They have been implicated in the genesis of arrhythmia (extrasystole or even ventricular fibrillation) by certain authors. 26 subjects with a strictly normal vectorcardiogram (VCG) were chosen at random and 71 subjects with an abnormal VCG were selected from a large population of young, healthy subjects. Using echocardiography, a false tendon was discovered in one subject from the first group and in eight subjects in the second group. Such disproportion (1/26 versus 8/71) was quite unexpected and lends weight to the idea that the false tendon is frequently active and is capable of altering the process of intraventricular activation. The modifications might result in vectorcardiographic traces such as those occasionally observed in healthy subjects.
INSERM U 121, Hôpital Cardiologique, Lyon.
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P
Arnaud
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M
Périnetti
D000328:Adult; D001145:Arrhythmias, Cardiac / Q000209:etiology; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D008297:Male; D011690:Purkinje Fibers / Q000503:physiopathology*; D014672:Vectorcardiography
Les faux tendons du ventricule gauche associés à des altérations vectocardiographiques. Etude préliminaire.