Adult CPR video tutorial: web link.

Methods for cardiopulmonary resuscitation:

1. Determine consciousness. Tap the patient's shoulders and call into both ears. If the patient is awake, continue to observe. If there is no response, the patient is comatose and proceeds to the next procedure.

2. Open the airway. Place one hand on the patient's forehead and push with the palm of the hand to tilt the patient's head back. Place the fingers of the other hand under the mandible near the chin bone and lift the mandible to lift the chin bone.

3. Check for foreign objects. While opening the airway, you should check whether there are foreign objects or vomitus in the patient's mouth. If there are any, use your fingers to dig out the foreign objects or vomitus in the patient's mouth. If you have dentures, you should remove them.

4. Chest compressions. Make sure the patient is lying on his back on the ground or use a chest compression board under his shoulders. The first responder can use different postures such as kneeling or a step stool, and place the heel of one hand in the center of the patient's chest, lower half of the sternum. On top of the head, place the heel of the other hand on the first hand. The fingers should not touch the chest wall. When pressing, the elbows must be straight and press vertically downward.

For adults, the compression frequency should be at least 100 times/min, and the compression depth should be at least 125px. The chest should be fully restored after each compression, and the compression time and relaxation time should each account for about 50%. When relaxing, the heel of the palm cannot Move away from the chest wall to avoid shifting the compression points.