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| __NOTOC__
| | #redirect:[[Posterior myocardial infarction]] |
| {{ST elevation myocardial infarction}}
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| {{CMG}}
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| {{SK}} posterior MI, true posterior MI
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| ==Overview==
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| A posterior MI is a [[heart attack]] or cessation of blood flow to the [[heart muscle]] that involves the backside or posterior side of the heart. Rather than causing the traditional [[ST segment elevation]] characteristic of the electrocardiogram of many heart attacks (a "[[STEMI]]"), because the heart attack is on the opposite side of the heart, the ST segments are depressed in the anterior precordial leads rather than elevated.
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| ==Pathophysiology==
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| A posterior MI is due to occlusion of the [[left circumflex artery]].
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| ==EKG Examples of Posterior MI==
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| Shown below is an EKG demonstrating changes during acute posterolateral MI depicting [[ST depression]] in [[precordial lead]]s [[Electrocardiogram#Precordial|V2]]-[[Electrocardiogram#Precordial|V3]].
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| [[Image:STEMI 5.jpg|center|800px]]
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| Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
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| ----
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| Shown below is an EKG illustrating inferior-posterior myocardial infarction with [[complete AV block]] and [[ventricular escape beat|ventricular escape rhythm]] with [[RBBB]] pattern and left axis, followed by [[sinus rhythm]].
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| [[Image:STEMI 13.jpg|center|800px]]
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| Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
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| ----
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| Shown below is an EKG demonstrating [[atrial fibrillation]] and inferior-posterior myocardial infarction.
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| [[Image:STEMI 20.jpg|center|800px]]
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| Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
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| ----
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| Shown below is an EKG demonstrating inferior-posterior-lateral myocardial infarction with a nodal escape rhythm
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| [[Image:STEMI 21.jpg|center|800px]]
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| Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
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| ----
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| Shown below is an EKG demonstrating atrial fibrillation with inferior-posterior-lateral myocardial infarction and incomplete [[right bundle branch block]]. Lead I shows ST depression, suggestive of right coronary artery involvement.
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| [[Image:STEMI 27.jpg|center|800px]]
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| Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
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| ----
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| Shown below is an EKG demonstrating ST elevation in leads II, III and aVF and ST depression in leads V1, V2 and V3 depicting a [[posterior MI]].
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| [[Image:Posterior MI patient.jpg|center|800px]]
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| ==References==
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| {{Reflist|2}}
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| [[Category:Disease]]
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| [[Category:Cardiology]]
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| [[Category:Ischemic heart diseases]]
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| [[Category:Intensive care medicine]]
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| [[Category:Emergency medicine]]
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| [[Category:Primary care]]
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| [[Category:Up-To-Date]]
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| [[Category:Up-To-Date cardiology]]
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| [[Category:Mature chapter]]
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| {{WH}}
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| {{WS}}
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