Muscular false tendons, aberrant left ventricular papillary musculature, and severe electrocardiographic repolarisation abnormalities: a new syndrome.

Abstract

Three patients (age 18-39

Left Ventricular Anomalous Muscle Band and Electrocardiographic Repolarization Changes in a 5 Year Old Girl

“…However, a few cases of large muscular tendons associated with repolarization abnormalities on the electrocardiogram have been reported in adults. 1) A similar case has also been reported concerning a child.…”

“…It is generally a benign unrecognized syndrome in adult patients. 1) To the best of our knowledge, only one report has been published on this condition in children. 2) We report here on a child with a large muscular mass within the left ventricular cavity that was associated with EC-G repolarization abnormalities.…”

Left ventricular false tendons: echocardiographic characteristics in the Polish population

“…Sporadically, the presence of FT can have a role in the occurrence of ventricular extrasystole or idiopathic ventricular tachycardia requiring ablation [22,23]. Data exist, suggesting that FT presence by itself is not an arrythmogenic factor in a healthy population [20]. However, a case of a double FT was described, in which one of the tendons was a site where polymorphic ventricular tachycardia originated (confirmed by an electrophysiology study).…”

“…The incidence of arrhythmia on 24-h electrocardiogram (ECG) in healthy subjects with or without FT did not differ. Also, 2 cases with repolarisation abnormalities ascribed to FT presence were published [20]. In a study by Płońska et al [19], the incidence of arrhythmia on 24-h ECG in 101 individuals with and without FT was similar.…”

Basic Study and Clinical Implications of Left Ventricular False Tendon. Is it Associated With Innocent Murmur in Children or Heart Disease?

“…The percentage of FT visualization in humans has been rising with technical improvements: the earliest studies report rates of 0.5% whereas current investigations have achieved up to 78%. [7][8][9][10][11][12][15][16][17] False tendon has been related to clinical signs, such as innocent murmur, [16][17][18] conduction and heart rate abnormalities, 19,20 cavitary thrombi, 21 and even infections, 22 although there is no consensus on the implication of FT in human physiology or disease. Its morphogenesis and embryonic origin are not well known, and prenatal imaging has been rare, with only a few reports of the condition observed during the fetal period.…”