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| {{SI}}
| | #Redirect [[ST interval#ST Elevation]] |
| {{CMG}}
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| '''ST elevations''' refers to a finding on an [[electrocardiogram]].
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| It can be associated with:
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| * [[Electrocardiography in myocardial infarction|ECG in myocardial infarction]]
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| * [[Left ventricular aneurysm]]
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| * [[Acute pericarditis]]<ref name="pmid18052017">{{cite journal |author=Tingle LE, Molina D, Calvert CW |title=Acute pericarditis |journal=Am Fam Physician |volume=76 |issue=10 |pages=1509–14 |year=2007 |month=November |pmid=18052017 |doi= |url=http://www.aafp.org/afp/20071115/1509.html}}</ref><ref name="pmid16228101">{{cite journal |author=Chew HC, Lim SH |title=Electrocardiographical case. ST elevation: is this an infarct? Pericarditis |journal=Singapore Med J |volume=46 |issue=11 |pages=656–60 |year=2005 |month=November |pmid=16228101 |doi= |url=http://www.sma.org.sg/smj/4611/4611me2.pdf}}</ref>
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| [[ST segment]] corresponds to a period of ventrical [[Systole (medicine)|systolic]] [[depolarization]], when the cardiac muscle is contracted. Subsequent relaxation occurs during the [[Diastole|diastolic]] [[repolarization]] phase. The normal course of [[ST segment]] reflects a certain sequence of muscular layers undergoing repolarization and certain timing of this activity. When the cardiac muscle is damaged or undergoes a pathological process (e.g. [[inflammation]]), its contractile and electrical properties change. Usually, this leads to early repolarization, or premature ending of the [[Systole (medicine)|systole]]. | |
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| The exact topology and distribution of the affected areas depend on the underlying condition. Thus, ST elevation may be present on all or some leads of ECG.
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| ST elevation in select leads is more common with MI, and ST elevation in all leads is more common with acute pericarditis.
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| ==See also==
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| * [[ST segment]]
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| * [[ST depression]]
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| ==References==
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| {{Reflist}}
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| {{cardiology-stub}}
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| {{Heart diseases}}
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