Anthony McDougal, a graduate student in MIT’s Department of Mechanical Engineering, developed a model that estimates the response of a single heart cell to dwindling supplies of oxygen. It assesses the ability of a cell to produce adenosine triphosphate (ATP), which acts as its primary source of fuel when oxygen becomes scarce.
Reference Link: http://news.mit.edu/2017/study-predicts-heart-cells-response-dwindling-oxygen-heart-attacks-0720