Only I, II and III leads can be obtained by 3-lead ECG, while I, II, III, AVR, AVF, AVL and V leads can be obtained by 5-lead ECG.
In order to facilitate the quick connection, we use the method of color marking to quickly attach the electrode plate to the corresponding position. The color of 3-lead ECG leads is marked as red, yellow, green or white, black and red; The color marks of 5-lead ECG leads are white, black, red, green and brown.
In the two specifications, wires with the same color are placed in different positions of electrode plates. It is more reliable to use English abbreviations RA, LA, RL, LL and c to determine the position than to remember the color.
Two, ECG monitoring three lead and five lead position
1, ECG monitoring three-lead position:
The upper right (RA) is located in the first intercostal space of the clavicle midline at the right edge of sternum.
Left superior (LA), between the first intercostal space of the left sternum and the clavicle midline.
Left inferior (LL), left clavicle midline xiphoid process level.
2, ECG monitoring five lead position:
Right upper (RA) white line: the first intercostal space of clavicle midline at the right edge of sternum.
Lower right (RL) green line: at the level of xiphoid process on the right clavicle midline.
Middle (c) brown line: the fourth intercostal space of the left sternum.
Left upper (LA) black line: the first intercostal space of clavicle midline at the left edge of sternum.
Lower left (LL) red line: the level of xiphoid process on the left clavicle midline.
Three, ECG monitor operation points
1. First, the skin should be kept clean and dry. Wipe the stratum corneum (the finger under the right clavicle, the intersection of the fifth rib on the left and the front line of the left armpit, and the midpoint of the connecting line between the two nipples) with abrasive paper.
2. Wash with water, dry with paper or dry naturally.
3. Take out the electrode pad and wipe the electrode pad.
4. Take out the leads, buckle the three electrode leads into the ECG electrode patch, and place the red electrode at the right subclavian finger; Place a yellow electrode at that midpoint of the two nipples; Place the black electrode at the intersection of the fifth left rib and the front line of the left armpit.
5. Finally, insert the plug at the other end of the ECG lead into the monitor correctly along the arrow direction. Open the monitoring equipment for ECG monitoring.