ST elevation myocardial infarction EKG examples
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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)
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Shown below is an EKG demonstrating acute anterior MI. LAD artery occlusion.
![](/images/2/27/STEMI_10.jpg)
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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)
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Shown below is an EKG demonstrating acute anterior myocardial infarction and left anterior hemiblock depicting ST elevation in precordial leads.
![](/images/d/db/STEMI_14.jpg)
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Shown below is an EKG demonstrating old anterior myocardial infarction and bifascicular block (RBBB and LAHB) as indicated in the anterior chest leads.
![](/images/a/a7/STEMI_15.jpg)
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Shown below is an EKG illustrating acute MI with proximal LAD occlusion depicting ST elevation in anterior precordial leads.
![](/images/1/1e/STEMI_16.jpg)
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Shown below is an EKG demonstrating a 2 days old anterior infarction with Q waves in V1-V4 with persisting ST elevation, a sign of left ventricular aneurysm formation.
![](/images/5/51/STEMI_17.jpg)
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Shown below is an EKG demonstrating a 2 weeks old anterior infarction with Q waves in V2-V4 and persisting ST elevation, a sign of left ventricular aneurysm formation.
![](/images/1/19/STEMI_18.jpg)
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Shown below is an EKG showing ST elevation in the anterior precordial leads, low voltages in all the leads, poor R wave progression in the precordial leads.
![](/images/6/6d/Acute_MI_anterior_LAD.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/File:De-AMI_anterior_LAD_2days.jpg
Shown below is an EKG demonstrating ST segment elevation in precordial leads signifying anterior myocardial infarction.
![](/images/2/27/De-AMI_anterior.png)
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Shown below is an EKG showing sinus rhythm with abnormal QRS and a Q wave in lead V2 which is suggestive of a previous anterior wall myocardial infarction.
![](/images/5/53/Previous_anterior_wall_myocardial_infartion..jpg)
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Shown below is an EKG demonstrating acute MI in a patient with LBBB
![](/images/6/61/STEMI_26.jpg)
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Lateral Myocardial Infarction
Shown below is an EKG demonstrating sinus rhythm and a QRS with a rightward axis, as well as wide Q waves in leads I and aVL as well as a poor R wave progression across the anterior chest leads. There is also slight ST elevation in leads I,aVL , and T wave inversion in the lateral leads. The EKG is consistent with a lateral wall myocardial infarction.
![](/images/f/f0/STEMI_35.jpg)
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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)
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Shown below is an EKG demonstrating acute myocardial infarction in in a patient with a pacemaker and LBBB. Concordant ST elevation in V5-V6 are clearly visible. There is discordant ST segment elevation > 5 mm in lead V3.
![](/images/3/3e/STEMI_25.jpg)
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Shown below is an EKG demonstrating findings in the same patient as in the first example 2 months before the myocardial infarction. Normal LBBB pattern.
![](/images/6/64/STEMI_25_a.jpg)
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Shown below is an EKG showing ST elevation MI.
![](/images/1/11/STEMI_29.jpg)
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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)
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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)
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Shown below is an EKG demonstrating RBBB and inferior MI. Note to left axis deviation.
![](/images/9/91/STEMI_22.jpg)
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Shown below is an EKG demonstrating lead V4R in a patient with RBBB and inferior MI, which clearly shows ST elevation.
![](/images/0/00/STEMI_23.jpg)
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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.
![](/images/e/e6/STEMI_27.jpg)
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Shown below is an EKG showing ST elevation in inferior leads.
![](/images/6/6a/STEMI_30.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/File:De-Ami0007.jpg
Shown below is an EKG showing ST elevation MI.
![](/images/a/a1/STEMI_32.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/File:De-KJcasus16.jpg
Shown below is an EKG showing ST elevation in inferior leads.
![](/images/9/9e/STEMI_33.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/File:De-Ami0011.jpg
Shown below is an EKG demonstrating sinus rhythm. The QRS shows Q waves in the inferior leads which are wide (>30ms) and about 25% of the QRS height in aVF. There is also slight ST elevation in the inferior leads and T wave inversion. The EKG suggests an inferior wall infarction, probably old. (the best way to determine "old" is to see a previous cardiogram).
![](/images/5/52/Old_inferior_wall_MI_1.jpg)
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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)
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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)
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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)
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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)
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Shown below is an EKG depicting sinus bradycardia with inferior-lateral myocardial infarction.
![](/images/8/8d/STEMI_9.jpg)
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Shown below is an EKG illustrating inferior-posterior myocardial infarction with complete AV block and ventricular escape rhythm with RBBB pattern and left axis, followed by sinus rhythm.
![](/images/2/2a/STEMI_13.jpg)
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Shown below is an EKG demonstrating atrial fibrillation and inferior-posterior myocardial infarction.
![](/images/3/35/STEMI_20.jpg)
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Shown below is an EKG demonstrating inferior-posterior-lateral myocardial infarction with a nodal escape rhythm
![](/images/2/29/STEMI_21.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page
Shown below is an EKG showing ST elevation MI.
![](/images/5/5f/STEMI_31.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/File:De-KJcasus13.jpg
Shown below is an EKG showing ST elevation MI.
![](/images/4/44/STEMI_34.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/File:De-Ami0010.jpg
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.
![](/images/9/9a/Posterior_MI_patient.jpg)
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)
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Shown below is an EKG demonstrating STEMI changes in the right precordial leads.
![](/images/2/26/STEMI_1_RV.jpg)
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Shown below is an EKG demonstrating clear ST elevation in the right precordial leads. A coronary angiography revealed a proximal right coronary artery occlusion.
![](/images/6/61/STEMI_20_a.jpg)
Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page