False chordae tendineae at left ventricul

False chordae tendineae are fibrous or fibromuscular structures which cross the ventricular cavity with no connections with valvular. They were considered for a long time as normal structures but now cardiologists are interested because of the possible association with the so-called innocent murmur, and even more so for the role they can have in eliciting ventricular arrhytmias. FCT are not simply a curiosity 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 arrythmia by certain authors. FCT were present in about half of the human hearts examined. The high prevalence of FCT were found in animal hearts. Diagnosis of FCT may help to explain cardiac findings of uncertain origin.