Vargas-Barron J, Antunez-Montes OY, Roldán, FJ, Aranda-Frausto A, González-Pacheco H, Romero-Cardenas Á, Zabalgoitia M

Language: English
References: 10
Page: 318-322
PDF size: 659.16 Kb.

ABSTRACT

Background: Torrent-Guasp explains the structure of the ventricular myocardium by means of a helical muscular band. Our primary purpose was to demonstrate the utility of echocardiography in human and porcine hearts in identifying the segments of the myocardial band. The second purpose was to evaluate the relation of the topographic distribution of the myocardial band with some post-myocardial infarction ruptures. Methods: Five porcine and one human heart without cardiopathy were dissected and the ventricular myocardial segments were color-coded for illustration and reconstruction purposes. These segments were then correlated to the conventional echocardiographic images. Afterwards in three cases with post-myocardial infarction rupture, a correlation of the topographic location of the rupture with the distribution of the ventricular band was made. Results: The human ventricular band does not show any differences from the porcine band, which confirms the similarities of the four segments; these segments could be identified by echocardiography. In three cases with myocardial rupture, a correlation of the intra-myocardial dissection with the distribution of the ventricular band was observed. Conclusions: Echocardiography is helpful in identifying the myocardial band segments as well as the correlation with the topographic distribution of some myocardial post-infarction ruptures.

REFERENCES

1. Torrent-Guasp F. [Structure and function of the heart]. Rev Esp Cardiol. 1998;51:91-102.

2. Torrent-Guasp F, Kocica MJ, Corno AF, et al. Towards new understanding of the heart structure and function. Eur J Cardiothorac Surg. 2005;27:191-201.

3. Sosnovik DE, Wang R, Dai G, et al. Diffusion MR tractography of the heart. J Cardiovasc Magn Reson. 2009;11:47.

4. Carreras F, Ballester M, Pujadas S, et al. Morphological and functional evidences of the helical heart from non-invasive cardiac imaging. Eur J Cardiothorac Surg. 2006;295:S50-5 .

5. Hayabuchi Y, Sakata M, Kagami S. Assessment of the helical ventricular myocardial band using standard echocardiography. Echocardiography. 2015;32:310-18.

6. Vargas-Barron J, Roldan FJ, Romero-Cardenas A, et al. Two and three-dimensional transesophageal echocardiographic diagnosis of intramyocardial dissecting hematoma after myocardial infarction. J Am Soc Echocardiogr. 2001;14:637-40.

7. Vargas-Barron J, Roldan FJ, Romero-Cardenas A, et al. Dissecting intramyocardial hematoma: clinical presentation, pathophysiology, outcomes and delineation by echocardiography. Echocardiography. 2009;26:254-61.

8. Vargas-Barron J, Gonzalez-Pacheco H, Melendez-Ramirez G, et al. Intramyocardial hemorrhage in spontaneously reperfused myocardial infarction. Rev Inv Clin. 2014;66:107-12.

9. Douglas WR. Of pigs and men and research: a review of applications and analogies of the pig, sus scrofa in human medical research. Space Life Sc. 1972;3:226-234.

10. Ballester M, Ferreira A, Carreras F. The myocardial band. Heart Fail Clin. 2008;4:261-72.