ECG's for practice - Living on the EDge

51 yr old male with no prior cardiac history presents with mid-sternal chest discom<strong>for</strong>t.

59 year old man with a 9 year history of palpitations. Had a recent syncopal episode

48-year-old woman having palpitations.

47-year-old male with chest tightness and nausea

54-year-old female with chest pain

Acute pericarditis. The ST segment (long arrows) is elevated in all leads (universal elevation in contrast to the focal elevation in acute
myocardial infarction), with no reciprocal change. The ST-segment elevation shows upward concavity (so-called "smiling face"). The PR
interval (short arrow) is depressed because of inflammatory changes involving the atrial wall.

Acute myocardial infarction. The ST segment (long arrow) is elevated in leads II, III, and aVF, and depressed (short arrow) in leads I, aVL, and
V 1 , V 2 , and V 3 (focal elevation in segment of injury, with reciprocal ST-segment depression). The ST elevation is convex upward (tomb shape or
so-called "sad face").
www.aafp.org/afp/AFPprinter/20021101/1695.htm

Early repolarization. ST-segment elevation (long arrow) is present in all leads, with no reciprocal depression. Peaked T waves (short arrow) are
seen in the middle precordial leads. No Q waves are present.