The standard 12 lead ECG Einthoven's Triangle Standard Limb leads(, I, Il) Augmented limb leads(aVR, aVr aL. aVF a Chest(precordial) leads(V1 V2,V3,V4,V5,V6) VI V2/V3UN4 V5 v6 Willem Einthoven: Dutch physiologist I He won a 1924 nobel prize for his contributions to electrocardiography aVeThe standard 12 lead ECG Einthoven’s Triangle Standard Limb leads (I, II, III) Augmented limb leads (aVR, aVL, aVF) Chest (precordial) leads (V1, V2, V3, V4, V5, V6) I II III aVR aVL aVF V1 V2 V3 V4 V5 V6 Willem Einthoven: Dutch physiologist. He won a 1924 Nobel Prize for his contributions to electrocardiography. 30