…

Widespread ST elevation

3


Causes of ST segment elevation

• Myocardial ischemia and injury

• Acute myocardial infarction




• Ventricular aneurysm




• Coronary vasospasm




• Pericarditis

• Non-ischemic ST segment elevation

• “High take-off” right precordial leads




• Benign early repolarization




• Left bundle branch block




• Left ventricular hypertrophy




• Brugada syndrome




• Subarachnoid hemorrhage




Myocardial infarction

• ST segments convex upward
• Q waves or loss of R waves
• Area of infarct artery

Acute pericarditis

• ST segments concave upward
• Limb and precordial leads
• PR segment depression
• ST/T ratio V6 > 0.25
1. ST-segment elevation divided by the height of the T wave.
2. Measured each from the isoelectric point

Early repolarization

• ST segments concave upward
• Precordial leads
• ST/T ration V6 < 0.25

BMJ 2002;324:1023-1026

American Family Physician Feb 15,1998