Ischemia

ISCHEMIA, or ischaemia (from Greek ischo- I hold back and haima-blood), local anemia (hyperemia) or lack of blood, is contrasted with a similar condition for the entire organism, so-called anemia (see). Ischemia occurs when the supplying arteries are narrowed or closed, which in turn depends on the most diverse causes, such as: closure of the artery by a thrombus, embolus, atherosclerotic plaque, pressure on the artery by a tumor, ligature, scar; finally, spasm often plays a significant role when numerous calluses of the myocardium on the basis of slowly progressive sclerosis of the coronary arteries have no history in the subject of any data that would indicate attacks of acute cardiac weakness.