The surgeon makes a fist and makes one or two short, strong knocks to the lower part of the patient's sternum. If there is no response and then repeat one or two times, after percussion, can often terminate ventricular tachycardia, ventricular fibrillation, restore sinus rhythm. If it is not effective, do the next rolling step treatment.
Immediately do full external cardiac compression, the left palm placed in the patient's lower 1/3 of the sternum, the right hand presses on the top of it, at a rate of 100 times per minute, moderate force, repeated pressure, so that the thorax up and down the degree of activity of 3-4 centimeters, the heart of the remaining oxygen-containing blood rapidly discharged into the arteries to make the heart and brain supply of blood, the thorax sinks back to rebound, to help and ventilation. Pressure should be even, gentle, too much force, easy to cause ribs, sternal fracture, pneumothorax, hemothorax, pericardial hemorrhage, bone marrow embolism, rupture of internal organs and other complications. If there is no response, the next step of treatment is carried out at the same time.
Artificial mouth-to-mouth respiration: pinch the patient's nostrils with one hand, push open the jaw to open the mouth, inhale forcefully after the patient's mouth is tightly closed to the patient's mouth, and blow into the patient's oral cavity at a rate of 16-18 times per minute, repeatedly (inhalation, blowing). If you can hear the patient exhalation sound is best.