• Investigación

    Structure and function of the canine ventricular myocardium (Canis lupus familiaris): Ventricular myocardial band

    Vol. 11 No. 22 (2015)
    Published: 2015-06-01
    Rodrigo De Lavalle
    luis Rendón
    Introduction: currently, there are new diagnostic tools and therapies for heart disease, but with no serious scientific consensus on the questions about the normal structure and function of the heart. Helical ventricular myocardial band of Torrent-Guasp is the revolutionary new concept in understanding global, three-dimensional, functional architecture of the ventricular myocardium. This concept defines the architecture and net forces developed within the ventricular mass. Materials and methods: 36 hearts of dogs of various weights, breeds and sexes were used to demonstrate the existence of a ventricular myocardial band in the canine myocardium by manual dissection. Results: the dissection performed showed a strong trend towards a continuous helical structure with a longitudinal arrangement of ventricular myocardial fibers, forming a single functional muscular band that begins at the height of the pulmonary artery and ends at the level of the aorta. Different segments of the band were identified: right (presence percentage 100 %) and left (100 %) with respect to parts of the basal loop, and descendant (100 %) and ascendant (100 %) in the dissection of the apical loop. Conclusions: the presence of the ventricular myocardial band in the canine myocardium (Canis lupus familiaris) was demonstrated and their structures identified. This is a new concept in the anatomy of the canine ventricular myocardium, where the complex network of the double helicoid is macroscopically evidenced. According to the theory of Torrent-Guasp, the canine myocardium would have the following contraction sequence: contraction of the basal loop, contraction of the descendant and ascendant segments of the apical loops, and ventricular ejection and suction.
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    How to Cite

    De Lavalle, R., & Rendón, luis. (2015). Structure and function of the canine ventricular myocardium (Canis lupus familiaris): Ventricular myocardial band. Spei Domus, 11(22). https://doi.org/10.16925/sp.v11i22.1156

    Budras D. K., Mccarthy P.H., Fricke W., Richter R. Chapter thoracic cavity: Anatomy of the dog. Germanya: Schlutersche. 2007.

    Sisson s., Grossman J. D. Sistema vascular: anatomia de los animales domesticos. Barcelona: salvat editores. 2000.

    Randall D., Burggren W., French K. Circulación: Fisiologia animal mecanismos y adaptaciones. Espoaña: mcgraw hill. 1998.

    Cunningham G. El corazón como bomba: Fisiología veterinaria. 3a ed. Madrid:Elsevier. 2009.

    Torrent-Guasp, F. La Estructuración macroscópica del miocardio ventricular. Rev Esp Cardiol 1980; 133: 265-287.

    Brecher GA. Experimental evidence of ventricular diastolic function. Circ Rev 1956; 4: 513-518.

    Brecher GA. Critical review of recent works on ventricular diastolic suction. Circ Res 1958; 6: 554-566.

    Rivero B. M., Gutierrez R. M., Sarasquete M.C., Gonzales C. M.L., García B.A. Activación electrica cardiovascular ¿Longitudinal y continua? La circulación electrica. España. Rev Esp Cardiol 1995; 1-9.

    Torrent-Guasp, F. Estructura y función del corazón. Rev Esp Car- diol 1998; 51: 91-102.

    Poveda F., Gil D., Martí E., Andaluz A., Balester M., Et. Añ. Estudio tractográfico de la anatomía helicoidal del miocardio ventricular mediante resonancia magnética por tensor de difusión. Rev Esp Cardiol. 2013; 66(10):782-790.

    Buckberg G. D. Basic science review: The helix and the heart. J Thorac Cardiovasc Surg 2002;124:863-883.

    Vazquez C. Fernado, La anatomía en la Grecia clásica: el periodo alejandrino. Revista del hospital J.M. ramos mejia. Volumen 11 n° 1, 2006.

    Ettigrew JB. On the arrangement of the muscular fibres in the ventricles of the vertebrate heart, with physiological remarks. Phylos Trans 1864;154:445—500.

    Torrent- Guasp F., Kocicab J.M., Cornoc A., Komedad M. J., Flotatsf A. Et al. Systolic ventricular filling. Europ J cardio-Tor Sur. 2004. 25, 276-386.

    Cosín A. J., Martínez H. A., Tuzón S. T., Agüero J.R., Torrent-Guasp. Estudio experimental de la llamada fase de relajación isovolumetrica del ventriculo izquierdo. Rev Esp Cardiol. 2009; 62(4):392-9.

    Buchalter MB, Rademakers FE, Weiss JL, Rogers WJ, Weisfeld ML, Shapiro EP. Rotational deformation of the canine left ventricle measured by magnetic resonance tagging: effects of catechola- mines, ischaemia and pacing. Cardiovasc Rev 1994; 28: 629-635.

    Andersona R., Yen Hob S., Redmannc K., Snachez D., Lunkenheimer P. The anatomical arrangement of the myocardial cells making up ventricular mass. Euro J of cardio-thoracic Surg. 28 (2005) 517-525.

    Cosín J., Hernandiz A. La disposición de las fibras miocárdicas en una banda condiciona la morfología y la función del corazón. Rev Esp Cardio. 2013; 66(10):768-770.

    Badke FR, Boinay P., Covell J.W. Effects of ventricular pacing on regional left ventricular performance in the dog. Arts T, Physiol. 1980 Jun;238(6):H858-67.

    Trainini J.C. El corazón es una bomba. Agonista. Rev. Arg Cardio. 2011, vol 79 no 1.

    Torren-Guast F., Ballester M.D., Buckber G.D., Carreras F., Floats A., Et al. Spatial orientation of the ventricular muscle band: physiologic conribution and surgical implications. The Jou of Thor and Car Surg. Agusto 2011; vol 122 no 2.

    Mladen J. K., Francesc C. C., Manel B.R., Moghbel M., et al. The helical ventricular myocardial band: global, three-dimensional, functional architecture of the ventricular myocardium. Europ J Cardio-thor Surg 29S (2006) S21—S40.

    Torrent-Guasp. La mecánica agonista-antagonista de los segmentos descendente y ascendente de la banda miocárdica ventricular. Rev Esp Cardiol Vol. 54, Núm. 9, Septiembre 2001; 1091-1102.

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