Abstract
The genesis of the vibratory systolic murmur heard in so many normal children has never definitely been established. In 1 case report, Roberts 1 attributed a loud musical murmur to a 2 mm-diameter band stretching across the left ventricular outflow tract. In a more recent study Perry et al 2 found left ventricular false tendons in 31 of 3,847 (0.8%) consecutive cross-sectional echocardiograms. A precordial murmur, most commonly vibratory, was heard in 14 of the 16 without associated heart disease. There seemed, then, to be an association of such murmurs with false tendons. Brenner et al 3 reported a 61% prevalence of left ventricular false tendons, but noted no correlation with any variety of murmur.
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