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|Title:||Left ventricular twist during dobutamine stress echocardiography after acute myocardial infarction: association with reverse remodeling|
van Herck, P.
|Citation:||International Journal of Cardiovascular Imaging, 2014; 30(2):313-322|
|Emer Joyce, Darryl P. Leong, Georgette E. Hoogslag, Paul L. van Herck, Philippe Debonnaire, Elena Abate, Eduard R. Holman, Martin J. Schalij, Jeroen J. Bax, Victoria Delgado, Nina Ajmone Marsan|
|Abstract:||Left ventricular (LV) twist is emerging as a marker of global LV contractility after acute myocardial infarction (AMI). This study aimed to describe stress- induced changes in LV twist during dobutamine stress echocardiography (DSE) after AMI and investigate their association with LV reverse remodeling at 6 months follow-up. In 82 consecutive first AMI patients (61±12 years, 85 % male) treated with primary percutaneous coronary intervention, DSE was performed at 3 months follow-up. Two-dimensional speckle-tracking-derived apical and basal rotation and LV twist were calculated at rest, low- and peak- dose stages. LV reverse remodeling was defined as C 10 % decrease in LV end-systolic volume between baseline and 6 months follow-up. Patterns of LV twist response on DSE consisted of either a progressive increase throughout each stage (n=18), an increase at either low- or peak-dose (n = 53) or no significant increase (n =11). LV reverse remodeling occurred in 28 (34 %) patients, who showed significantly higher peak-dose LV twist (8.51° vs. 6.69°, p =0.03) and more frequently progressive LV twist increase from rest to peak-dose (39 vs. 13 %, p \0.01) compared to patients without reverse remodeling. Further- more, increase in LV twist from rest to peak-dose was the only independent predictor of LV reverse remodeling at 6 months follow-up (OR 1.3, 95 % CI 1.1-1.5, p = 0.005). Both the pattern of progressive increase in LV twist and the stress-induced increment in LV twist on DSE are significantly associated with LV reverse remodeling at 6 month follow-up after AMI, suggesting its potential use as a novel marker of contractile reserve.|
|Keywords:||Stress echocardiography; acute myocardial infarction; left ventricular twist; left ventricular torsion; reverse remodeling|
|Rights:||© Springer Science+Business Media Dordrecht 2013|
|Appears in Collections:||Aurora harvest 2|
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