Kneeling posture is adopted to make the patient lie flat and ensure smooth airflow. The correct compression position is the middle and lower sternum 1/3.

The specific positioning method is as follows

1, manipulation

The rescuer slides the index finger and middle finger of his left hand along the rib arch to the intersection of the rib arches on both sides, that is, the infrasternal notch, and then horizontally places the index finger and middle finger above the infrasternal notch, where the middle part of the sternum above the index finger is the pressing area. Place the palm root of the other hand next to the index finger on the patient's sternum, then remove the positioning hand, overlap the palm root on the back of the other hand, so that the finger leans away from the chest wall, or cross your fingers and lift your fingers.

2. Frequency

The rescuer should straighten his elbows, center his shoulders above the patient's sternum, keep his shoulders and hands vertical, and press down hard. The reduction depth is 5 ~ 6 cm, the reduction frequency is 100 ~ 120 times/minute, and the reduction and relaxation time are almost equal.

3. Pressing pressure.

When children are subjected to chest compressions, the position and frequency of compressions are the same as those of adults, but the depth of compressions is one-third of the anteroposterior diameter of the chest, 4 ~ 5 cm, and the movements should be smooth and the force should not be too strong. For example, the object of chest compression is infants, and its operation is different from that of adults and children. The baby's pressing position is the next finger at the junction of the two nipples on the sternum and the midline of the sternum. The rescuer should press with the middle finger and the ring finger, not too hard.

Extended data:

Correct and effective pressing technical requirements are:

1, the rescuer leans forward, his shoulders should be directly above his hands, his arms should be straight, and his elbows should not be bent. Use the weight of the upper body and the strength of the shoulder and arm muscles to press down vertically, and don't lean to one side or sway from side to side;

2, the press should be smooth, the force should be uniform, and the press should be regular and uninterrupted;

3, after each press, should be relaxed, make the chest back to normal position, to ensure that the sternum is not subject to any pressure. When relaxing, pay attention to the palmar root that is positioned and don't leave the sternum positioning point. Judge whether the pressing is effective or not. If there are two rescuers, one should be able to touch the carotid artery or femoral artery when pressing.

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