Limb leads are made up of 4 leads placed on the extremities: left and right wrist; left and right ankle. The lead connected to the right ankle is a neutral lead, like you would find in an electric plug. It is there to complete an electrical circuit and plays no role in the ECG itself.

How many standard limb leads are used?

The six limb leads measure a copulate circle or 360 degrees around the heart. They measure the electrical activity of the heart from every possible angle. The reason for this is obvious. By measuring he heart from different angles, you will be able to pinpoint the location of any conduction deft in the heart.

### What are the standard limb or bipolar leads?

Well, the 2 leads situated on the right and left wrist (or shoulders), AVr and AVL respectively, and the lead situated on the left ankle (or left lower abdomen) AVf, make up a triangle, known as “Einthoven’s Triangle”. Information gathered between these leads is known as “bipolar”.

Einthoven described a system of three bipolar leads located at the right arm, left arm, and left leg to form a triangle. Lead I represents the potential difference between the right and left arm; an electrical impulse moving from right to left generates a positive ECG deflection in this lead.

## Where do you put limb leads?

Limb leads can be placed on any part of the patient’s respective limbs. Just make sure the leads are symmetrical. For example, don’t put one lead on the left shoulder and the other lead on the right forearm.

Some of the ECG leads are bipolar leads (e.g., standard limb leads) that utilize a single positive and a single negative electrode between which electrical potentials are measured.

### What are the unipolar limb leads?

The bipolar leads (limb) are the multitaskers that give different views by tracing the electrical activity between two (one positive and one negative) electrodes. The unipolar leads (augmented limb and precordial) are the slow and steady electrodes that stay positive (+) and reference each other to provide an accurate tracing.

What is an EKG 12 lead?

A 12-lead electrocardiogram (ECG) is a medical test that is recorded using 12 leads, or nodes, attached to the body. Electrocardiograms, sometimes referred to as ECGs or EKGs, capture the electrical activity of the heart and transfer it to graphed paper. The results can then be analyzed by medical professionals, such as paramedics and cardiologists.

## What are the different leads in an ECG?

An intracardiac electrogram (ICEG) is essentially an ECG with some added intracardiac leads (that is, inside the heart). The standard ECG leads (external leads) are I, II, III, aVL, V 1, and V 6.

07/03/2019