ECG Case 001
Middle-aged patient presenting with chest pain and diaphoresis. BP dropped to 80/50 following sublingual nitrates.
Describe and interpret this ECG
ECG ANSWER and INTERPRETATION
General:
- Sinus rhythm, rate 84bpm
- Normal axis
- 1st degree AV block (PR 220ms)
Signs of inferior STEMI:
- STE in inferior leads II, III, aVF
- Reciprocal STD in lateral leads I, aVL, V6
Signs of associated right ventricular infarction:
- STE in III > II
- STE in V1-2
This patient also had STE in V4R, confirming the diagnosis of RV infarction:
CLINICAL PEARLS
- RV infarction complicates 40% of inferior STEMIs
- Suggestive features include:
- ST elevation in V1, the only lead that looks directly at the RV
- ST elevation in III > II, as lead III is more rightward facing
- Diagnosis can be confirmed with right-sided leads
- These patients are preload sensitive and may have an exaggerated hypotensive response to nitrates
Read more about diagnosing RV infarction and how to record the V4R lead
TOP 100 ECG SERIES
Emergency Physician in Prehospital and Retrieval Medicine in Sydney, Australia. He has a passion for ECG interpretation and medical education | ECG Library |
MBBS (UWA) CCPU Emergency Medicine Advanced Trainee based in Melbourne, Australia. Co-author of the LITFL ECG Library. Likes Ultrasound, Echo, ECGs, and anything and everything with caffeine. Part of the 2021 ANZCEN Clinician Educator Incubator Programme | @rob_buttner | ECG Library |
2 Comments
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Dr. Burns
I find a interesting aspect in the ecg: ST ELEVATION V2>V3>V4
It’s important to know the result of coronariogram. Please give us this date. Thanks
It seems to be an occlusion of a big dominant RCA with PDA rapping around the apex causing antero-inferior MI