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Artificial respiration and chest cardiac knowledge


Artificial respiration and chest cardiac knowledge


There are many methods for artificial respiration. The most effective method is mouth-to-mouth breathing.


Method of mouth-to-mouth blowing


The wounded person was lying on his back with his head leaning back, opening his mouth and covering it with gauze. The ambulance held his jaw in one hand and forced it back upwards slightly to open the airway and pinched his nostrils with the other hand. After taking a deep breath, the operator blows in the mouth of the wounded and can see that the chest uplift is effective. After blowing, immediately release the hand holding the nostrils. This is repeated, blowing 16-18 times per minute.




Before the artificial respiration is performed, the collar, tops, and trousers, etc., that impede the breathing on the wounded person should be untied quickly so that the chest can expand freely and the food inside the mouth of the wounded person that hinders breathing can be quickly removed. When artificial respiration is done, the injured person should lie supine so that the head is turned back and the nostrils face upwards. If the tongue roots are subsiding, they should be pulled out to make the respiratory tract clear. The volume and pressure of the air blow were slightly larger. After 10 to 20 blows, the air volume gradually decreased, and the chest rose slightly.

When the teeth are tightly closed, you can use the nasal air-blowing method and close your mouth with one hand to blow your nose to the nose. The others are the same.


Thoracic cardiac compression


The method is to use human strength to help the heart resume beating after the heart beat stops, and maintain the body's blood circulation.


Operation method


When doing a heart press, the injured person should lie supine in a relatively solid place, and hit 1 to 2 times in the sternum. If there is no reaction, then chest cardiac compression is performed.

The ambulancemen folded their hands and placed their palm roots on the lower half of the chest (middle sternum).

The elbow joint is straightened, and with the help of its own weight and the strength of the shoulder-arm muscles, it is evenly and rhythmically pressed downwards, so that the lower half of the sternum body and the connected tendon are depressed by 3 to 4 centimeters, and then the hand is immediately relaxed. The root does not leave the wounded skin, so it is repeated. Adults press 60-80 times per minute; children press with a single palm root and press about 100 times per minute.




(1) The wounded should not lie on the canvas, rope stretcher or on the steel wire bed, otherwise the pressing effect cannot be achieved.

(2) Pressing should have a certain punching force, too hard to play the role of indirect oppression of the heart, too heavy will cause bone fractures.

(3) At the same time when cardiac compression is performed, artificial respiration should be performed at a ratio of 5:1, ie, each time an artificial respiration is performed, chest cardiac compression is performed 5 times.

(4) To check whether the heartbeat and breathing are restored, allow the operation to be suspended for 5 minutes. If you are carrying a wounded person, the interruption time does not exceed 30 minutes.

(5) At the same time as the rescue on the spot, ask the doctor for treatment.


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Copyright © Tianjin Guoan Security Service Co., Ltd.  
津ICP备18003958号-1  Powered by www.300.cn