Einthoven’s Triangle 3 lead placementEinthoven’s Triangle is formed when when the three ECG leads are placed on the patient.

A red lead is placed on the right wrist or shoulder- known as AVr

A yellow lead is placed on left wrist or shoulder- known as AVl.

A green lead is placed on the ankle or left lower abdomen- known as AVf

Information gathered between these leads is known as “bipolar”. It is represented on the ECG as 3 “bipolar” leads.

When looking at the ECG chart these are shown as I, II, II

information between AVr and AVl is known as lead l.
Information between AVr and AVf is known as lead ll
Information between AVl and AVf is known as lead lll