Basal antero-septal anomalous papillary muscle in hypertrophic obstructive cardiomyopathy
© Angheloiu et al; licensee BioMed Central Ltd. 2015
Published: 3 February 2015
We report the presence of an anomalous papillary muscle inserting into the basal antero-septum in patients with hypertrophic obstructive cardiomyopathy (HOCM) investigated by means of cardiac MRI.
9 consecutive patients with HOCM and 13 age- and gender-matched controls without this condition were interrogated using a Siemens Espree MRI machine. A diagnosis of HOCM was established on the basis of asymmetric antero-septal left ventricle hypertrophy and systolic anterior motion of the mitral apparatus.
An anomalous papillary muscle connecting the basal antero-septum with the left ventricular apex and contracting during systole is more commonly seen in HOCM patients than in controls. Further larger studies are needed to elucidate the importance of this anatomical finding in the physiology of left ventricle outflow tract obstruction.
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