Isolated high lateral acute myocardial infarction with superior injury current axis

Lee LC, Tan HC, Poh KK
Correspondence: Dr Lee Li Ching, leeliching@yahoo.com

ABSTRACT
We report a 70-year-old man with high lateral ST elevation myocardial infarction secondary to occlusion of left circumflex artery. Electrocardiography (ECG) showed ST depression in inferior leads and isolated ST elevation in leads aVR and aVL, demonstrating a superior axis of the injury current vector. Different presentations of ECG pattern from left circumflex artery occlusion were discussed. This case highlights the importance of recognising unusual ECG pattern in accurate diagnosis of acute myocardial infarction.

Keywords: acute myocardial infarction, isolated high lateral acute myocardial infarct, left circumflex artery occlusion, myocardial infarction, ST depression, ST elevation
Singapore Med J 2008; 49(10): e266-e268