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Tag Archives: PMI

April 2017 Br J Cardiol 2017;24:72-4 doi:10.5837/bjc.2017.011 Online First

Recognition and management of posterior myocardial infarction: a retrospective cohort study

Leigh D White, Joshua Wall, Thomas M Melhuish, Ruan Vlok, Astin Lee

Abstract

Introduction An acute myocardial infarction causes a number of electrocardiogram (ECG) changes corresponding to coronary anatomy.1,2 The posterior myocardial infarction (PMI) refers to an infarction of the posterior wall of the left ventricle (LV).3 On the 12-lead ECG, the key to detecting a PMI is through indirect evidence via ST-depression in the antero-septal (V1–V4) leads and evolving R-waves in V1 or V2 with R/S ratios >1.1 A common theory is that these evolving R-waves represent inverted Q-waves. While ST-depression typically occurs in V1–V4, it may also extend into V5 and perhaps other leads.4 In these cases, posterior occlusion

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