Abnormalities of the ST Segment

  • D. Gallo
  • J. M. Pines
  • W. Brady


The ST segment represents the period between depolarization and repolarization of the left ventricle. In the normal state, the ST segment is isoelectric, meaning that it is neither elevated nor depressed relative to the TP segment. Abnormalities of the ST segment of clinical import include ST segment elevation and ST segment depression. The electrocardiographic (EKG) differential diagnosis of abnormalities of the ST segment is broad, containing ominous and benign entities, including ST elevation myocardial infarction (STEMI), bundle branch block (BBB), acute pericarditis, benign early repolarization, left ventricular hypertrophy, ventricular paced rhythm, digoxin effect, myocarditis, cardiomyopathy, etc [1, 2, 3].


Acute Coronary Syndrome Ventricular Aneurysm Acute Myocardial Infarc Chest Pain Patient Left Ventricular Apical Ballooning 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • D. Gallo
    • 1
  • J. M. Pines
    • 2
  • W. Brady
    • 1
  1. 1.Department of Emergency MedicineUniversity of Virginia Health SystemCharlottesvilleUSA
  2. 2.Department of Emergency MedicineUniversity of Philadelphia Pennsylvania School of MedicinePhiladelphiaUSA

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