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Background and Objective: Wilson’s disease is a genetic disorder of copper metabolism that affects liver and other organs including heart. In early stages of myocardial affection, the left ventricle (LV) appears apparently normal when evaluated by traditional two-dimensional (2D) echocardiography. The aim of this study was to detect subclinical LV dysfunction in children with Wilson’s disease using 2D speckle tracking echocardiography. Patients and Methods: Twenty children with Wilson’s disease were compared with age- and sex-matched 20 healthy children. All subjects were evaluated by traditional 2D echocardiography and speckle tracking echocardiography. Results: There were no significant differences between patients and controls regarding conventional echo parameters except for lower E mitral flow and E' annular septal peak velocity in patient group. The regional peak longitudinal strain of apical 4 chamber view was -17.8% ± 4.2% in patients and -20.1% ± 2.3 % in control subjects (P = 0.043), and for apical 2 chambers view, it was -20.1%± 3.6% in patients and -22.6% ± 3.4% in control subjects (P = 0.034) and it was -18% ± 3.5% in patients and -20.5% ± 3.2% in control subjects (P = 0.025) in apical long axis view. The global peak longitudinal strain was also lower in patients than control group (18.3% ± 3.2%, and 20.85% ± 2.4%) respectively (P = 0.014). There were no significant differences between both groups regarding circumferential and radial strains (P > 0.05). Conclusions: Despite apparently normal LV systolic function, the children with Wilson’s disease demonstrated significantly lower peak longitudinal strain as an indicator for early affection of LV systolic function.

Assessment of LV Function in Children with Wilson’s Disease: Speckle Tracking Imaging Study