Found someone collapsed, you can refer to the following steps to help:
The first step, to determine whether the environment of the scene is safe
The second step, to determine the consciousness, patting and heavy call;
The third step, if there is no response, looking for someone to call the emergency phone to fetch the nearest AED;
The fourth step, look at the breathing, rather than to listen to and look at the feeling, observing the patient's chest There is no rise and fall for 5 to 10 seconds, if there is no breathing or abnormal breathing (jaw breathing) to start CPR;
The fifth step, the implementation of chest compression and artificial respiration.
Position: at the midpoint of the line connecting the two nipples (lower and middle part of the sternum), depth: 5 to 6 centimeters (about the width of a bank card), frequency: 100 to 120 times/minute. Keep repeating until an AED or first responder arrives.
About artificial respiration between the questions:If not practiced, do not blow, for may blow more, less or simply did not blow in, and blowing will also interrupt the time of pressure. Should continue uninterrupted pressure, waiting for the arrival of professional rescuers early pressure, the less interruption, the earlier the shock, the higher the success rate of the heart to re-beat chest compression is the most common complication is a rib fracture, but everything has a light weight, break a few ribs compared to saving lives, the latter is the most important.
Cardiopulmonary resuscitation (CPR) six-step trick
Hands pat the shoulder awareness, observation of the thorax to determine the breathing; call loudly to the side to help, the emergency telephone quickly; side kneeling and loose clothing to set a good position, the palm of the hand cocked up the ten-finger clasp; the upper body leaning forward arm vertical, a second two hands do not leave the mouth of the clear pinch the nose to lift the lower jaw, the two blowing to be effective; ten than two continued to do, not to success do not say goodbye.
AED, also known as automated external defibrillator, automated external defibrillator, which can diagnose specific cardiac arrhythmias and give electric shock defibrillation, is available to non-professionals for the rescue of patients with sudden cardiac death of medical equipment. It is small, portable, simple and effective, and the emergence of AEDs has made it possible to realize the "golden four minutes" of first aid. AED is a simple and safe device to use, which is called "fool remover". Cardiac arrest patients early 85% ~ 90% of the cause of ventricular fibrillation, out-of-hospital treatment of ventricular fibrillation is the most effective way to early defibrillation with AED. Every 1-minute delay in defibrillation reduces the survival rate by 7% to 10%, and the early and effective use of CPR and AED is the most effective means of rescuing patients with cardiac and respiratory arrest.
External compression
Cardiac arrest, loss of consciousness, the disappearance of the aortic pulsation (no heartbeat, not gasping for breath, breathing is extremely abnormal), O can CPR, can "figure". You can perform chest compressions, and keep doing them until an AED or paramedics arrive.
The heart is a "pump" that pumps blood throughout the body, and when the heart stops or ventricles (beating irregularly), the "pump" stops working, and the whole body becomes Ischemia. The blood carries oxygen, and when the heart stops beating for 4 minutes, brain cells begin to suffer irreversible hypoxic necrosis. We perform chest compressions in order to manually "pump" the blood, squeeze the blood to the organs of the body, to prevent the organs from dying due to ischemia and lack of oxygen.
Cardiac arrest refers to the sudden termination of the heart's ejection function, the disappearance of large arterial pulsations and heart sounds, and severe ischemia and hypoxia of vital organs (e.g., the brain), leading to the end of life. This unexpected and sudden death is also known as sudden death in medicine.