Non-invasive myocardial work normal reference ranges in healthy children

Abstract Funding Acknowledgements Type of funding sources: None. BACKGROUND Myocardial work (MW) estimation by pressure-strain loops (PSL) allows a non-invasive evaluation myocardial performance, as recently demonstrated in adult patients. Aim this study is to provide the reference values for global index (MWI), constructive (MCW), wasted (MWW), and efficiency (MWE) group healthy children. METHODS Assessment MW was performed using commercially available software package (Echopac, GE). measured from PSLs areas, derived LVP curves combined with strain acquired speckle tracking echocardiography (STE). After calculating GLS, brachial blood pressure were inserted time valvular events indicated, then able measure PSLs. RESULTS Two-dimensional (2D) standard speckle-tracking 90 children (mean age 9.9 ±4.9 [1-17] years, females: 57%) together assessment means Mean ± deviation, 5° 95° percentile MWI, MCW, MWW, MWE whole population 1769 254 mm Hg, (1354-2193); 2201 290 (1657-2658); 78 47 (29-163) Hg%; 96 1.8 (92-99)%, respectively. CONCLUSIONS The feasible This provides useful 2-dimensional echocardiographic ranges novel indices MW.