ST elevation myocardial infarction EKG examples
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
EKG Examples
Shown below is an EKG demonstrating the evolution of an infarct on the EKG. ST elevation, Q wave formation, T wave inversion, normalization with a persistent Q wave suggest STEMI.
![](/images/9/93/STEMI_evolution.png)
Copyleft image obtained courtesy of ECGpedia, http://en.ecgpedia.org/wiki/File:AMI_evolutie.png
Anterior Myocardial Infarction
Shown below is an EKG demonstrating loss of R waves throughout the anterior wall (V1-V6). QS complexes in V3-V5. ST elevation in V1-V5 with terminal negative T waves.
![](/images/1/19/STEMI_7.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
Shown below is an EKG demonstrating acute anterior MI. LAD artery occlusion.
![](/images/2/27/STEMI_10.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
Shown below is an EKG showing sinus rhythm with anteroseptal myocardial infarction depicting ST elevation in V1-V6 and in lead I.
![](/images/5/5d/STEMI_11.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
Anterolateral Myocardial Infarction
Shown below is an EKG demonstrating sinus rhythm. The remarkable feature is the poor R wave progression in the V1 and V2 leads and the ST elevation and T wave changes in leads V1 to V4 and I and aVL. The cardiogram suggests an anterior/ lateral MI possibly acute. There is also terminal P wave negativity in V1 suggesting a left atrial abnormality.
![](/images/7/7b/Acute_ant-lateral_MI.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/File:E209.jpg
Inferior Myocardial Infarction
Shown below is an EKG demonstrating ST elevation in the precordial and limb leads depicting acute inferior MI.
![](/images/0/03/STEMI_2.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
Shown below is an EKG demonstrating changes during acute inferior MI depicting ST elevation in leads II, III and aVF.
![](/images/d/d3/STEMI_4.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
Posterior Myocardial Infarction
Shown below is an EKG with ST elevation in II, III, aVF (in III > II), ST depression in I, aVL, V2. Tall R in V2, otherwise normal QRS morphology. The findings are suggestive of acute posteroinferior MI.
![](/images/3/3e/STEMI_3.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
Shown below is an EKG demonstrating changes during acute posterolateral MI depicting ST depression in precordial leads V2-V6.
![](/images/9/9f/STEMI_5.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
Infero-Posterior Myocardial Infarction
Shown below is an EKG with ST depression in V1, V4, tall R in V2. ST elevation in II, III, aVF, V5 and V6.
![](/images/d/d4/STEMI_6.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
Shown below is an EKG with sinus bradycardia with first degree AV block and inferior-posterior-lateral myocardial infarction.
![](/images/d/d0/STEMI_8.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
Shown below is an EKG depicting sinus bradycardia with inferior-lateral myocardial infarction.
![](/images/8/8d/STEMI_9.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
Right Ventricular Myocardial Infarction
Shown below is an EKG demonstrating ST elevation in lead V1 and aVR; reversal of V6.
![](/images/e/e9/ST_elevation_in_V1_and_aVr.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
Shown below is an EKG demonstrating STEMI changes in the right precordial leads.
![](/images/2/26/STEMI_1_RV.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page