ECG helps in viewing the electrical health of the heart and in cases of MI, it can predict which artery is occluded and the area at risk based on the ST changes in certain leads. This article may aid in the diagnosis and management of the patient.

Anterior MI

Details about the current of injury

Figure 1: Current of if injury if occlusion involves first septal (S1)

Figure 2: Current of injury in proximal vs Distal LAD and resulting different changes in ECG

Inferior MI

Lead V4R

Leads V3R and V4R should be recorded as rapidly as possible after the onset of chest pain because ST elevation persists for a much shorter period than STQ in extremity leads (II, III, and avF).

V3 to III ratio magnitude of ST depression in lead V3 relative to STE in lead III

ECG pattern STEMI equivalent

Differentiating pseudo AWMI from AWMI

Concomitant ST-segment elevation in the precordial leads (especially V1-V3-V4) and inferior leads (II, III and aVF).

Disclaimer- The views and opinions expressed in this article are those of the author and do not necessarily reflect the official policy or position of M3 India.

About the author of this article: Dr. Birdevinder Singh DM (Cardiology), Senior Consultant Interventional Cardiologist, Patiala Heart Institute, Patiala.