<prompt> All of the following statements regarding subendoc ardinal infarction are true, exceptThese are multifocal in natureThese often result from hypotension or shockEpicarditis is not seenThese may result in aneurysm  <response>: Are MI s limited to the inner third of the myocardium. These infracts typically do not exhibit ST segment elevation or Q waves on the ECG tracing. This region is most vulnerable to hypoperfusion and hypoxia . Thus in the setting of severe coronary aery disease Robbins 9th edition page no. 379 