| The structure and function of the helical heart and its buttress wrapping. IV. Concepts of dynamic function from the normal macroscopic helical structure. | |
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MedLine Citation:
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PMID: 11807733 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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G D Buckberg; C Clemente; J L Cox; H C Coghlan; M Castella; F Torrent-Guasp; M Gharib |
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Publication Detail:
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Type: Journal Article; Review |
Journal Detail:
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Title: Seminars in thoracic and cardiovascular surgery Volume: 13 ISSN: 1043-0679 ISO Abbreviation: Semin. Thorac. Cardiovasc. Surg. Publication Date: 2001 Oct |
Date Detail:
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Created Date: 2002-01-24 Completed Date: 2002-03-06 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 8917640 Medline TA: Semin Thorac Cardiovasc Surg Country: United States |
Other Details:
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Languages: eng Pagination: 342-57 Citation Subset: IM |
Copyright Information:
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Copyright 2001 by W.B. Saunders Company |
Affiliation:
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Department of Surgery, University of California at Los Angeles Medical Center, Los Angeles, 90095-1741, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Electrophysiology Heart / anatomy & histology*, physiology* Hemodynamics / physiology* Humans Models, Cardiovascular Ventricular Function |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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