RT Book, Section A1 Murtagh, John A1 Murtagh, Clare SR Print(0) ID 1208724812 T1 The ECG and Myocardial Infarction T2 John Murtagh’s General Practice Companion Handbook, 8th Edition YR 2022 FD 2022 PB McGraw-Hill Education (Australia) Pty Ltd PP Sydney, Australia SN 9781743768266 LK murtagh.mhmedical.com/content.aspx?aid=1208724812 RD 2024/10/09 AB The ECG leads and orientation are shown in Figure M4. The typical ECG changes of acute myocardial infarction (AMI) with pathological Q waves, S-T segment elevation and T wave inversion are highlighted in leads III and AVL of acute inferior infarction (Fig. M5). Lead AVL facing the opposite side of the heart shows reciprocal S-T depression.