What is ECG/EKG
Electrocardiogram (ECG or EKG) is the use of ECG machine from the body to record the heart of each cardiac cycle generated by the electronic activity of the graphics technology.
ECG lead
The heart is a three-dimensional structure, in order to reflect the different aspects of the heart of the electrical activity, in different parts of the body placed electrodes to record and respond to the heart of the electrical activity. The placement of the heart electrode is shown in the following table. In the routine ECG examination, usually only four limb clamp ecg electrodes and V1 - V6 chest ecg electrodes, record the conventional 12-lead ECG.
ecg electrodes name | ecg electrodes position |
LA | upper arm |
RA | right upper arm |
LL | left lower arm |
RL | right lower arm |
V1 | The fourth intercostal space of the right sternum |
V2 | The fourth intercostal space of the left sternum |
V3 | between V2 and V |
V4 | The fifth intercostal space on the left clavicle |
V5 | The fifth intercostal space on the left armpit |
V6 | The fifth intercostal space on the left axillary midline |
V7 | Fifth ribbed space on the left armpit line |
V8 | Fifth ribbed gap on the left scapular line |