<prompt> A 57-year-old woman presents to the hospital with a 2-hour history of retrosternal chest pain and dyspnea. Her electrocardiogram ECG reveals an acute myocardial infarction pattern. Which of the following ECG patterns is consistent with that interpretation?tall P wavesprominent U wavessmall QRS complexelevated ST segments  <response>: Early ischemic changes are tall, peaked T waves that then develop into inverted T waves. Elevated ST segments and Q waves also occur early. 