An acute Inferior MI features signs of coronary occlusion (hyperacute T waves, ST elevation, Q formation) in the inferior leads (II, IIII, aVF) along with reciprocal changes in aVL +/- lead I. There may also be right ventricular infarction or posterior infarction. The culprit can be any of the three main coronary arteries, but is usually a dominant RCA occlusion. Less often it is a dominant left circumflex, or occasionally it is a wraparound LAD (anterior and inferior infarction).
- Hampton, J and Hampton, J (2019) - The ECG Made Easy, 9th edn, Elsevier
- Rowlands, A and Sargent, A (2019) - The ECG Workbook, 4th edn, M&K Publishing
- Thaler, MS (2018) - The Only EKG Book You'll Ever Need, 9th edn, Lippincott Williams and Wilkins
- (2015) - ECG Interpretation Made Incredibly Easy!, 6th edn, Lippincott Williams & Wilkins
- Wagner, GS and Strauss, DG (2013) - Marriott's Practical Electrocardiography, 12th edn, LWW
- Goldberger, A (2006) - Clinical Electrocardiography: A Simplified Approach, 9th edn, Elsevier
- Douglas Wong (2011) - The ST Elevation Song! (What to Look for on an EKG), (Accessed: 07/09/2019)
- Easy EKG (2015) - Easy EKG: STEMI, (Accessed: 07/09/2019)
- Nurseledclinics (2011) - www.fastlearnecg.com : Simple reading and Interpreting of a 12-lead ECG (EKG) - Yes you can do it!, (Accessed: 10/09/2019)
- Osmosis (2019) - ECG Cardiac Infarction and Ischemia | Osmosis, (Accessed: 07/09/2019)
- Strong Medicine - Intro to EKG Interpretation - Myocardial Infarctions (Part 2 of 2), (Accessed: 05/09/2019)
- USMLEVideoLectures (2008) - Most Important ECG Findings in Major Diseases, (Accessed: 28/06/2019)
- alidaroxana12 (2011) - CCRN Study Tip: Where MI's are on EKG's, (Accessed: 08/09/2019)
This ECG is from a middle-aged woman who presented with syncope and hypotension.
This ECG shows sinus tachycardia with inferior ST elevation and reciprocal ST depression in aVL. Also ST elevation in V1 and ST depression in V2-4. The most likely cause was acute inferoposterior MI due to proximal RCA occlusion.
This ECG is from a middle aged man who presented with chest pain and diaphoresis while exercising. He had a VSD repair at age 6.
This ECG shows sinus tachycardia with RBBB + LPFB. ST elevation in III and aVF with reciprocal ST depression in aVL. ST depression in V2-5. The cause was inferoposterior MI, due to severe triple vessel disease and a culprit 100% circumflex occlusion.
This ECG is from a man in his 60s who presented with chest pain for 48h with diaphoresis.
This ECG shows inferior ST elevation with reciprocal depression in aVL and I. ST depression in V2-4. Deep Q waves inferior leads and tall R waves V1-3. The cause was a completed infarction with 2 likely culprits (RCA and circumflex).
This ECG is from a man in his 60s who presented with chest pain radiating to the back and nausea/vomiting. He had a history of previous MI and stents.
This ECG shows inferior ST elevation (straightened ST segments) without reciprocal changes, with terminal QRS distortion in inferior leads. The cause was an inferior MI with some posterior involvement.