Knowledge of artificial respiration and external chest compression
There are many methods of artificial respiration, and the most effective is mouth-to-mouth blowing.
Operation method of mouth-to-mouth blowing
The wounded man lies on his back, his head fully tilted back, his mouth open and covered with gauze. The rescuer held his lower jaw with one hand and tilted back slightly to open the airway, while pinching his nostril with the other. After taking a deep breath, the operator blows hard at the mouth of the wounded, and it is effective to see the chest bulge. After blowing, immediately release the hand pinching the nostril. This is repeated, blowing 16 to 18 times per minute.
Before the application of artificial respiration, the collar, coat, belt, etc. of the wounded that obstruct breathing should be quickly untied so that the chest can expand freely, and the food that obstructs breathing in the mouth of the wounded should be quickly taken out. When doing artificial respiration, the wounded should be made to lie on his back with his head tilted back and his nostrils facing upward. If the root of the tongue sags, it should be pulled out to make the respiratory tract unblocked. The amount and pressure of blowing are slightly larger, and gradually decrease after blowing 10-20 times, with the chest rising slightly.
Teeth closed, available nasal blowing method, one hand closed the mouth, with the mouth to the nose for blowing, the other above the same.
Extrathoracic cardiac compression
The method is to use artificial strength to help the heart to resume beating and maintain blood circulation throughout the body when the heart stops beating.
Method of operation
When doing heart compressions, the wounded should be supine in a relatively solid place and hit 1-2 times in the sternum. If there is no response, chest compressions should be performed.
The rescuer's hands are overlapped and the palm root is placed 1/2 below the middle (sternum) of the chest corridor,
The elbow joint is straightened, and with the help of its own weight and the strength of the shoulder and arm muscles, it is pressed down evenly and rhythmically, so that the lower half of the sternal body and the connected tendon cartilage sag 3~4cm, and then the hand is immediately relaxed (the palm root does not leave the skin of the wounded), and this is repeated. Adults press 60~80 times per minute; children with a single palm root press, press about 100 times per minute.
(1) The wounded should not lie on canvas, rope stretcher or on a steel wire bed, otherwise the pressing effect will not be achieved.
(2) Pressing should have a certain pressure, too light force can not play the role of indirect compression of the heart, too heavy will cause bone fracture.
(3) at the same time of heart compression, artificial respiration should be carried out, the ratio is 5:1, that is, for each artificial respiration, 5 times of chest external heart compression should be carried out.
(4) To check whether the heartbeat and breathing are restored, allow the operation to pause for 5 minutes. If the casualty is transported, the interruption time shall not exceed 30 minutes.
(5) in the on-site rescue at the same time, to quickly ask a doctor to deal.