It can help us monitor Bipolar and augmented leads. The 6 Lead ECG method consists of 6 electrodes including four limb and two chest electrodes. Six (6) lead ECG Electrode/Cable Placement: It is Bipolar Lead form and Monitor reads as Lead I,II & III along with Chest lead “C” It is Typical Bipolar Lead form and Monitor reads as Lead I,II & IIIįive (5) lead ECG Electrode/Cable Placement:Ī Five(5) lead configuration requires the placement of the three electrodes in the Three (3)-lead configuration with the addition of a fourth electrode adjacent to sternum (right side of Fourth intercostal space) and a fifth electrode on the patient's lower right abdomen. Three (3) lead ECG Electrode/Cable Placement:Ī 3-lead configuration requires the placement of three electrodes one electrode adjacent each clavicle bone on the upper chest and a third electrode adjacent the patient's lower left abdomen. These leads are represented by capital letter ‘C’ followed by a subscript numeral which represents the position of the electrodes on the pericardium.Ĭ1- Fourth intercostal space to the right of SternumĬ2- Fourth intercostal space to the left of SternumĬ4- Fifth intercostal Space at Mid- clavicular lineĬ5- Same level as C4 on anterior axillary lineĬ6- Same level as C4 on Mid- axillary line It employs an exploring electrode to record the potential of the heart action on the chest in SIX different positions. Lead III - Potential difference between left arm and left leg Lead II - Potential difference between right arm and left leg Lead I - Potential difference between right arm and left arm Precordial / Chest Leads ( C1,C2,C3,C4,C5,6)Ī lead consisting of Single positive electrode and a reference point is a unipolar lead also called augmented leadĪ lead consisting of two electrodes of opposite polarity is called bipolar lead, Bipolar lead wave forms derived from Limb Electrodes. There are 3 type of leads in typical ECG wave forms:īipolar leads ( Lead I, Lead II, Lead III)
#HEART MONITOR LEAD PLACEMENT SKIN#
To reduce resistance at the skin and electrode contact following steps are to be takenġ) If needed excessive hair on the skin must be removed with water, soap and non-alcohol wipes.Ģ) The skin must be dry and free from dead cells and oil.ģ) Dry the Skin vigorously to increase the Capillary blood flow of the tissue.Ĥ) Electrodes must be full contact with the skin.ĥ) Choose proper position of electrodes based on manufacturer’s recommendation.Ī pair of electrodes or a combination of several electrodes through resistance network that gives an equivalent pair is referred as a Lead. Skin is a poor conductor of electricity and therefore skin resistance plays a critical role in acquisition of ECG trace quality. Hence it is important to know the anatomy before placing the electrodes in right place. The electrical activity arises out of heart muscles and passes through the soft tissues which can be harnessed superficially over the skin. The Heart is located behind and slightly to the left of sternum.
Repolarization of Ventricles represented by T Wave.īefore placing the electrodes on Human body we need to understand the logic based on which the electrodes/ leads are placed Repolarization of Ventricles represented by S Wave (i.e. Intra-Ventricular Spectrum represented by Q Wave.ĭepolarization of main mass of ventricles represented by R Wave (i.e. Generally, the waveform is of 12 Leads.Ītrial depolarization represented by P Wave.ĭepolarization of Atrial i.e. Recording Electrocardiogram- Capture of ECG waveform for a given time and the ECG waveforms printed as Graphical representation in an ECG Machine. Generally, the ECG waveform is of 3/5/6 leads. Monitoring Electrocardiogram- Real time display of the ECG waveform on a Multi-parameter Monitor. There are of two types of Electrocardiogram used for diagnosis: In this guide, we will explain the ECG Cable/Electrode placement in a simplified manner.Įlectrocardiograph is an Instrument used to record electrical activity of the heart, non-invasively, which reflects contraction and relaxation of Cardiac muscles in a Cardiac cycle.Īn Electrocardiogram or ECG is also known as EKG in German speaking countries Hi, This is another article to guide the users for ECG lead electrodes/cables placement from team Biometric Cables, a company engaged in manufacturing of ECG Cables for the past 15 years.