Advancing Commotio cordis Safety Standards Using the Total Human Models for Safety (THUMS).

Autor: Dickey GJ; School of Biomedical Engineering, University of Western Ontario, London, Canada., Bian K; Department of Mechanical and Materials Engineering, Faculty of Engineering, University of Western Ontario, London, Canada., Islam SU; Department of Mechanical and Materials Engineering, Faculty of Engineering, University of Western Ontario, London, Canada., Khan HR; Division of Cardiology, Department of Medicine, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada., Rohr S; Department of Physiology, University of Bern, Bern, Switzerland., Mao H; School of Biomedical Engineering, University of Western Ontario, London, Canada. hmao8@uwo.ca.; Department of Mechanical and Materials Engineering, Faculty of Engineering, University of Western Ontario, London, Canada. hmao8@uwo.ca.
Jazyk: angličtina
Zdroj: Annals of biomedical engineering [Ann Biomed Eng] 2023 Sep; Vol. 51 (9), pp. 2070-2085. Date of Electronic Publication: 2023 May 25.
DOI: 10.1007/s10439-023-03235-9
Abstrakt: Commotio cordis is one of the leading causes of sudden cardiac death in youth baseball. Currently, there are chest protector regulations regarding the prevention of Commotio cordis in baseball and lacrosse; however, they are not fully optimized. For the advancement of Commotio cordis safety, it is vital to include various age groups and a variety of impact angles in the testing process. This study employed finite element models and simulated Commotio cordis-inducing baseball collisions for different velocities, impact angles, and age groups. Commotio cordis risk response was characterized in terms of left ventricular strain and pressure, chest band and rib deformation, and force from impact. Normalized rib and chest band deformation when correlated with left ventricular strain resulted in R 2  = 0.72, and R 2  = 0.76, while left ventricular pressure resulted in R 2  = 0.77, R 2  = 0.68 across all velocities and impact angles in the child models. By contrast, the resultant reaction force risk metric as used by the National Operating Committee on Standards for Athletic Equipment (NOCSAE) demonstrated a correlation of R 2  = 0.20 in the child models to ventricular strain, while illustrating a correlation to pressure of R 2  = 0.74. When exploring future revisions to Commotio cordis safety requirements, the inclusion of deformation-related risk metrics at the level of the left ventricle should be considered.
(© 2023. The Author(s) under exclusive licence to Biomedical Engineering Society.)
Databáze: MEDLINE
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