environment applies to all the external factors that have a formative influence on one's physical, mental, or moral development. the kind of environment that produces juvenile delinquents; milieu applies especially to the physical and social surroundings of a person or group of persons.
Myocardial ischemia is an imbalance between myocardial oxygen supply and demand. Left untreated, it results in angina pectoris, myocardial stunning, myocardial hibernation, ischemic preconditioning, postconditioning, or under the most severe instances, acute coronary syndrome and myocardial infarction.
Ischemia is a symptom in which a person does not have enough blood supply to a part of the body, making that part of the body ischemic. For example, in a heart attack, a coronary artery is blocked so blood cannot get to the heart muscle beyond the blockage point.