Características Morfológicas y Biométricas del Músculo Papilar Septal en Corazones de Individuos Chilenos

a descriptive research study was carried out on the anatomical and biometric characteristics of the septal papillary muscle in 30 hearts of adult chilean subjects, between 18 and 84 years of age of both sexes and without apparent cardiac pathology, from the normal human anatomy unit, basic sciences department of the universidad de la frontera. results show that the septal papillary muscle was present in 83.3% of the hearts in the study. of these 44.0% show one muscle only, 28% show two muscles and 28% show three septal papillary muscles. in the septal papillary muscles found, 71.1% are free cone-shaped, 24.4% were attached cone-shaped, and 4.5% were bridge-shaped. regarding the length of attached cone and free cone shaped, the highest percentage range was between 4.0 mm and 5.99 mm, with 45.5% and 42.4% respectively. the present study shows the importance of integrating the septal papillary muscle to the international anatomical nomenclature.