Myocardial Infarction: Difference between revisions

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The cardiomyocytes in the ''subendocardial'' layers are especcially vulnerable for a decreased perfusion. Subendocardial ischemia manifests as ST depression and is usually reversible. In a myocardial infarction ''transmural ischemia'' develops.  
The cardiomyocytes in the ''subendocardial'' layers are especcially vulnerable for a decreased perfusion. Subendocardial ischemia manifests as ST depression and is usually reversible. In a myocardial infarction ''transmural ischemia'' develops.  


In the first hours and days after the onset of a myocardial infarction, several changes can be observed on the ECG. First, '''large peaked T waves''' (or ''hyperacute'' T waves), then '''ST elevation''', then'''negative T waves''' and finally '''[[pathological Q waves]]''' develop.
In the first hours and days after the onset of a myocardial infarction, several changes can be observed on the ECG. First, '''large peaked T waves''' (or ''hyperacute'' T waves), then '''ST elevation''', then'''negative T waves''' and finally '''[[Pathologic_Q_Waves|pathologic Q waves]]''' develop.


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!days
!days
| e
| e
| [[Pathological Q Waves]]
| [[Pathologic_Q_Waves|Pathologic Q Waves]]
|-
|-
|}
|}