These two days, a small experiment of "self-testing against coronavirus" suddenly became popular on the Internet! Experiments show that as long as you hold your breath according to the instructions in the animation, you can judge your lung function and blood oxygen level and whether you have the ability to resist coronavirus. Many people believe it and do it. So, is this experiment really reliable? "Reaching the standard" can prove that you have the ability to resist Covid-19?
[Hold your breath continuously for 24 seconds to test lung function and blood oxygen level]
This small test of "self-test against coronavirus" shows that as long as you can hold your breath from A to B, it means that your lung function and blood oxygen level have the ability to resist coronavirus. The reporter calculated that this breath-holding time is about 24 seconds, and most people can do it. But in fact, the length of holding your breath is influenced by many other factors, such as age, height, weight and subjective will. Experts say that the time of holding your breath reflects the state of a person’s cardiopulmonary function. Usually, as long as you hold your breath for more than 30 seconds after taking a deep breath, the doctor thinks that your cardiopulmonary function is normal.
Liu Hong, deputy chief physician of the Department of Thoracic Surgery, Nanjing Second Hospital, said: "Holding your breath is not a matter of time, but a matter of integrating various factors. Conventionally speaking, holding your breath for more than 30 seconds can basically tolerate a chest operation. But actually I hold my breath for 20 seconds, can’t I have a chest operation? That’s not what I said. We should combine his lung function test, heart function test and electrocardiogram. "
[Doctor: It is unscientific to verify antiviral ability by holding your breath]
At present, the breath-holding test is only used as a supplementary means of lung function examination in clinic. This simple and rough method is not accurate, and the formal lung function examination is much more accurate. Therefore, it is not reliable to judge whether a person has the ability to resist coronavirus just by holding his breath for a long time.
Liu Hong said, "I got this disease, pneumonia and lung infection. Can I have a good prognosis or a bad prognosis?". This is caused by many factors, and can not be evaluated simply by a breath-holding test. This is a very wrong conclusion. Whether another ordinary people can be infected with the corresponding diseases in public places. For example, infectious diseases such as influenza and pneumonia have nothing to do with breath-holding test, but are related to personal immunity and the amount of bacteria and viruses in the environment you are exposed to. "
In addition, the breath-holding test needs to be operated under the guidance of medical staff. It is unnecessary to do the breath-holding test yourself, and it will also induce risks.
Liu Hong said: "For example, patients with hypertension or coronary heart disease, or patients with poor lung function and asthma, these patients may induce some diseases by holding their breath. For this group of people, this kind of self-testing may bring certain risks. "
(Reporting by Wang Shu and Xie Jian)
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