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The Structure and Function of the Helical Heart and Its Buttress Wrapping. IV. Concepts of Dynamic Function From the Normal Macroscopic Helical Structure

Buckberg, Gerald D. and Clemente, Carmine and Cox, James L. and Coghlan, H. Cecil and Castella, Manuel and Torrent-Guasp, Francisco and Gharib, Morteza (2001) The Structure and Function of the Helical Heart and Its Buttress Wrapping. IV. Concepts of Dynamic Function From the Normal Macroscopic Helical Structure. Seminars in Thoracic and Cardiovascular Surgery, 13 (4). pp. 342-357. ISSN 1043-0679. https://resolver.caltech.edu/CaltechAUTHORS:20130913-095300646

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Abstract

Torrent-Guasp's model of the helical heart is presented, which includes the cardiac muscular structures that produce 2 simple loops and that start at the pulmonary artery and end in the aorta. These components include a horizontal basal loop that surrounds the right and left ventricles, changes direction through a spiral fold in the ventricular band to cause a ventricular helix produced by now obliquely oriented fibers, forming a descending and ascending segment of the apical loop with an apical vortex. These anatomic concepts are successively activated to produce a sequence of narrowing by the basal loop, shortening by the descending segment, lengthening by the ascending segment, and widening in the cardiac cycle that causes ventricular ejection to empty and suction to fill. The factors responsible for internal torsional movements for cardiac output and suction are defined, together with mechanisms responsible for electromechanical activity produced during sequential changes in contraction and relaxation properties. These interactions of mechanical structure and function are defined in relation to pressure-related cardiac events observed from aortic, left ventricular, and left atrial recordings.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1053/stcs.2001.29956DOIArticle
http://www.semthorcardiovascsurg.com/article/S1043-0679%2801%2970069-X/abstractPublisherArticle
Additional Information:© 2001 WB Saunders.
Group:GALCIT
Subject Keywords:Fiber architecture, isovolumetric contraction, double helical coil, myocardial band, excitation-contraction
Issue or Number:4
Record Number:CaltechAUTHORS:20130913-095300646
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20130913-095300646
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41314
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:17 Sep 2013 20:01
Last Modified:03 Oct 2019 05:47

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