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ST Morphology: Difference between revisions
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The most important cause of '''ST segment elevation''' is '''acute [[Ischemia]]'''. Other causes are <cite>Wang</cite><cite>Werf</cite>: | The most important cause of '''ST segment elevation''' is '''acute [[Ischemia]]'''. Other causes are <cite>Wang</cite><cite>Werf</cite>: | ||
*Early repolarization | *Early repolarization (see below) | ||
*[[Clinical Disorders#Pericarditis|Acute pericarditis]]: ST elevation in all leads except aVR | *[[Clinical Disorders#Pericarditis|Acute pericarditis]]: ST elevation in all leads except aVR | ||
*[[Pulmonary_Embolism|Pulmonary embolism]]: ST elevation in V1 and aVR | *[[Pulmonary_Embolism|Pulmonary embolism]]: ST elevation in V1 and aVR | ||
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[[Image:early_repol.png|thumb|none|Characteristics of early repolarization]] | [[Image:early_repol.png|thumb|none|Characteristics of early repolarization]] | ||
[[Image:Semantic_confusion_early_repolarization.svg|thumb|Unfortunately the term early repolarization is used to describe different phenomenons with differing clinical impact.]] | |||
'''Early repolarization''' is a term used for ST segment elevation without underlying disease. It probably has nothing to do with actual early repolarization. It is commonly seen in young men. It is important to discern early repolarization from ST segment elevation from other causes such as [[ischemia]]. Characteristics of early repolarization are:<cite>Kambara</cite> | '''Early repolarization''' is a term used for ST segment elevation without underlying disease. It probably has nothing to do with actual early repolarization. It is commonly seen in young men. It is important to discern early repolarization from ST segment elevation from other causes such as [[ischemia]]. Characteristics of early repolarization are:<cite>Kambara</cite> | ||
* an upward concave elevation of the RS-T segment with distinct or "embryonic" J waves | * an upward concave elevation of the RS-T segment with distinct or "embryonic" J waves | ||