How to do cardiopulmonary resuscitation, learn to save yourself and protect your life? This is written by Dr. Jita Krishnawami.

Please note that the "cough cardiopulmonary resuscitation" mentioned in this article has proved to be a rumor. Please don't believe it. This rumor points out that when chest pain may lead to myocardial infarction, people should cough hard and take a deep breath, on the grounds that "deep breathing can let oxygen enter the lungs, cough squeezes the heart and maintain blood circulation, and the pressure of squeezing also helps the heart return to normal rhythm". This is the essence of the so-called "self-cardiopulmonary resuscitation".

However, this method, which sounds good, is useless and even harmful.

1. The cough depth is not up to the standard that can be treated.

Standard cardiopulmonary resuscitation (CPR) aims to maintain effective circulation through cardiac compression. But the heart is protected by hard ribs, and it is very laborious to achieve the effect of squeezing the heart. According to the guidelines for cardiopulmonary resuscitation, the depth of adult heart compression should reach at least 5 cm at a time.

Although I don't expect you to feel the same way, according to the actual rescue experience, a strong man with a height of 1.8 meters and a weight of 0. 1 ton can be soaked through by such pressing for 5 minutes. Expecting cough to drive the soft tissue in the mediastinum to effectively press the heart obviously can't achieve the above strength and won't have any effect.

2. The cough frequency is low, which will have no effect.

It is rumored that the frequency of coughing and deep breathing is once every two seconds.

Cardiopulmonary resuscitation compresses the heart to maintain effective cardiac output, which depends on the amount of blood injected each time and the beating frequency. In the standard CPR guidelines, the frequency of heart compressions is required to be at least 100 times per minute! You can try the frequency of 100 beats per minute with the metronome, and you will know how weak 30 beats per minute (in this article, it is two seconds) looks. To say the least, even normal people will basically faint if their heartbeat is only 30 times per minute. So this rhythm will not have any effect.

Taking a deep breath actually delays the opportunity to save lives.

Now let's talk about deep breathing. The author said in the original text that the function of deep breathing is to let oxygen enter the lungs. In the latest CPR guideline, the order of ABC (airway-breathing-circulation) was changed to CAB, which greatly improved the importance of maintaining circulation. Some foreign studies show that maintaining circulation is more meaningful than maintaining breathing and can save lives. Therefore, even if the author's self-CPR is really effective, then we should seize precious time to cough desperately, and don't delay the chance of saving lives because of slow and deep breathing.

If you are really unfortunate enough to have symptoms of radiation chest pain, call the emergency number immediately, clearly inform the emergency personnel of your location, contact information and brief information, and open the door lock to wait for rescue.

Once again, you must call the emergency number first, and then inform your family or neighbors. Don't miss the chance to save your life.

Of course, if you are not alone, you'd better pray that everyone around you has participated in first aid training and can keep up with the crisis, so that your chances of surviving the crisis will be greatly improved.

All that remains is to stay calm and wait for help. Don't waste your energy on deep breathing and coughing, which really doesn't mean anything to you in a crisis.