Electrocardiographic monitoring electrodes are connected in the order of the electrode connecting wire connected to the above marked with the letters of the alphabet:
Right upper (RA): the right edge of the sternum clavicle midline the first intercostal space;
Right lower (RL): the right clavicle midline at the level of the raphe;
Intermediate (C): the left edge of the sternum the fourth intercostal space;
Left upper (LA): left edge of the sternum clavicle midline the first intercostal space;
Left lower (LL): left edge of the clavicle midline the first intercostal space;
Left lower (LL): left clavicle midline at the level of the raphe. intercostal space;
Lower left (LL): left midclavicular line at the level of the xiphoid process.
Placement of ECG monitor electrodes:
Thoracic leads V1 to V6 are red, yellow, green, tea, black, and purple in that order.
V1 is located at the 4th intercostal space on the right edge of the sternum;
V2 is located at the 4th intercostal space on the left edge of the sternum;
V3 is located at the midpoint of the line connecting the two points of V2 and V4;
V4 is located at the point where the left midclavicular line meets the 5th intercostal space;
V5 is located at the level of the left anterior axillary line at V4;
V6 is located at the level of the left midaxillary line at V4 ;
Right red and left yellow in the upper limbs, right black and left green or right green and left black in the lower limbs.
The ECG lead electrodes for monitoring systems are mostly made of silver-silver chloride.
Cardiac monitoring is aimed at timely detection of heart rhythm disorders and/or bradycardia, tachycardia, etc., rather than conventional ECG as the analysis of the S-T segment abnormalities, or more detailed analysis and interpretation of the ECG, so the electrode plate placed on the site is different from the conventional electrocardiography, often referred to as the monitoring lead in the clinic, but the electrode plate should be placed in a way that can meet the following conditions:
1. p>
1, P wave clear, obvious (such as sinus rhythm).
2, QRS wave amplitude should be clear and reach a certain amplitude to trigger heart rate counting and alarm.
3. It should not interfere with resuscitation operations (e.g., electrical defibrillation).
Reference: Baidu Encyclopedia-Cardiac Monitoring