Midwall shortening After coarctation repair: The effect of through-plane motion on single-plane indices of left ventricular function

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dc.contributor.author Gentles, TL en
dc.contributor.author Cowan, Brett en
dc.contributor.author Occleshaw, CJ en
dc.contributor.author Colan, SD en
dc.contributor.author Young, Alistair en
dc.date.accessioned 2011-09-06T02:16:47Z en
dc.date.issued 2005 en
dc.identifier.citation J Am Soc Echocardiogr 18(11):1131-1136 Nov 2005 en
dc.identifier.issn 0894-7317 en
dc.identifier.uri http://hdl.handle.net/2292/7731 en
dc.description.abstract Left ventricular midwall function is increased after repair of coarctation of the aorta (CoA). The cause is unclear. This study aimed to examine the variance between fiber shortening derived from 3-dimensional models of myocardial deformation, and 1- and 2-dimensional indices of left ventricular systolic function. In all, 15 young adults after CoA and 15 matched control subjects were recruited. Endocardial and midwall fractional shortening were calculated using M-mode echocardiography. Ejection fraction, midwall fractional shortening, and myocardial deformation were calculated or measured from magnetic resonance (MR) imaging. Echocardiographic and cine-MR imaging midwall fractional shortening were increased after CoA (P = .02 and <.001). In contrast, 3-dimensional MR tagging demonstrated normal midwall circumferential shortening and decreased longitudinal shortening in the CoA group (P < .01). Cine MR midwall shortening, recalculated to allow for through-plane motion, was similar to tagged midwall shortening, with no difference between the CoA and control groups. After CoA, measures of left ventricular function systematically overestimate midwall fiber shortening unless the methodology accounts for through-plane motion. en
dc.language EN en
dc.relation.ispartofseries Journal of the American Society of Echocardiography en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/0894-7317/ en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.subject TERM FOLLOW-UP en
dc.subject AORTIC-STENOSIS en
dc.subject ARTERIAL-HYPERTENSION en
dc.subject INDEPENDENT PREDICTOR en
dc.subject SYSTEMIC HYPERTENSION en
dc.subject PRESSURE-OVERLOAD en
dc.subject SYSTOLIC FUNCTION en
dc.subject WALL STRESS en
dc.subject MECHANICS en
dc.subject GEOMETRY en
dc.title Midwall shortening After coarctation repair: The effect of through-plane motion on single-plane indices of left ventricular function en
dc.type Journal Article en
dc.identifier.doi 10.1016/j.echo.2005.05.004 en
pubs.issue 11 en
pubs.begin-page 1131 en
pubs.volume 18 en
dc.rights.holder Copyright: 2005 American Society of Echocardiography. en
dc.identifier.pmid 16275520 en
pubs.end-page 1136 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 46437 en
pubs.org-id Bioengineering Institute en
pubs.org-id ABI Associates en
pubs.org-id Medical and Health Sciences en
pubs.org-id Medical Sciences en
pubs.org-id Anatomy and Medical Imaging en
pubs.record-created-at-source-date 2010-09-01 en
pubs.dimensions-id 16275520 en


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