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Myocardial Infarction: Difference between revisions
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→Development of the ECG during persistent ischemia
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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 '''[[ | 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. | ||
{| class="wikitable" | {| class="wikitable" | ||
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!days | !days | ||
| e | | e | ||
| [[ | | [[Pathologic_Q_Waves|Pathologic Q Waves]] | ||
|- | |- | ||
|} | |} | ||