The effect of anteroapical aneurysm plication on end-systolic three-dimensional strain in the sheep: a magnetic resonance imaging tagging study

The Journal of Thoracic and Cardiovascular Surgery
Julius M GuccioneMark B Ratcliffe

Abstract

Although repair of left ventricular aneurysm has been extensively studied, its effect on regional ventricular function remains unclear. The primary goal of this study was to quantify the effect of anteroapical aneurysm plication on systolic deformation in noninfarcted adjacent (border zone) and remote left ventricular regions in sheep. Eight sheep underwent anteroapical myocardial infarction (25% of left ventricular mass). Ten weeks later, animals underwent aneurysm plication. Two and 6 weeks after this operation, animals underwent magnetic resonance imaging with tissue tagging in multiple short-axis and long-axis slices. Fully 3-dimensional strain analyses were performed. All 6 end-systolic strain components were compared at midwall in the border zone of the aneurysm or repair and in regions 1 cm, 2 cm, and 3 cm below the valves. Circumferential shortening progressively increases from before plication to 2 weeks after plication to 6 weeks after plication toward the border zone. The effect on circumferential shortening is most pronounced in the anterior wall and septum. The biggest change is from 2 to 6 weeks after plication (from 4.3% to 11.3% in anterior wall, P < .0001; from 3.5% to 6.5% in septum, P < .0007). Longitudinal s...Continue Reading

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Citations

Mar 25, 2011·Journal of Biomechanical Engineering·Jonathan F WenkJulius M Guccione
Nov 16, 2013·Journal of Biomechanical Engineering·Gabriel Acevedo-BoltonMark B Ratcliffe
Jun 30, 2009·American Journal of Physiology. Heart and Circulatory Physiology·Yi LiuGhassan S Kassab
Aug 24, 2011·Biomedical Engineering Online·Jennifer S LawtonMichael K Pasque
Dec 1, 2009·Interactive Cardiovascular and Thoracic Surgery·Koichi TodaYoshiki Sawa
Nov 16, 2013·Journal of Biomechanical Engineering·A I VeressJ B Bassingthwaighte
May 6, 2008·The Journal of Thoracic and Cardiovascular Surgery·Joseph C WalkerJulius M Guccione
May 11, 2010·International Journal for Numerical Methods in Engineering·Daniel R EinsteinMark B Ratcliffe
Apr 27, 2010·The Annals of Thoracic Surgery·Jonathan F WenkMark B Ratcliffe
Dec 18, 2013·Journal of Magnetic Resonance Imaging : JMRI·Irene Del-CantoDavid Moratal
Sep 9, 2021·Journal of Cardiac Surgery·Ali Fatehi HassanabadImtiaz S Ali

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