Information gathered between these leads is ecg in practice pdf as “bipolar”. It is represented on the ECG as 3 “bipolar” leads.
AVr and AVl is known as lead l. Now we have 12 leads, we need to know which regions of the heart each lead is looking at and what groups they make up. AVL is on the left wrist or shoulder and looks at the upper left side of the heart. Lead l travels towards AVL creating a second high lateral lead.
AVf is on the left ankle or left lower abdomen and looks at the bottom, or inferior wall, of the heart. Lead lll travels from AVL towards AVf to become a 3rd inferior lead. V2 V3 and V4 look at the front of the heart and are the anterior leads. V1 is often ignored but if changes occur in V! V2 only, these leads are referred to as Septal leads.