The brain is the organ that requires the most air, oxygen and blood nutrients in the human body. Therefore, our brain and nerve cells are sensitive to lack of oxygen: hypoxia.
Oku.Az Experts have reportedly said that the symptoms of oxygen deficiency in the brain manifest in different ways.
For example, they believe that dizziness is the first sign of oxygen deficiency. This means that the vestibular apparatus is disturbed, there is sedation, ringing in the ears, noise. As well as headaches, nausea, vomiting, weakness, blurred vision, blinking, etc. it can happen.
What are the consequences of lack of oxygen in the brain?
Neurologist doctor Galib Asadov Okhu.AzHe said in his statement that the brain cannot remain without oxygen.
“Even when the amount of oxygen in the brain decreases, we get dizzy. If the brain is deprived of oxygen, we lose consciousness and fall. If you think about it, when we bend over, we get dizzy for a moment. This happens because the amount of oxygen reaching the brain in approximately one thousandth of a second. If the brain is deprived of oxygen, death occurs within 4-5 minutes.
That’s why when the heart stops, they call it clinical death, because then there is a small amount of oxygen in the brain, and after 4-5 minutes, the brain cells also die and biological death occurs.
The brain makes up only 2% of our body weight. However, 20% of the blood pumped by the heart, that is, 1/5, goes only to the brain and the remaining 4/5 to other parts of our body.
When oxygen reaching the brain decreases, cerebral ischemia occurs, which means that the person loses consciousness. In this case, the duration of a person’s life depends on how many areas and which part of the brain are deprived of oxygen. For example, a person dies when the medulla oblongata, that is, the brain stem, is deprived of oxygen.
But when it is in the frontal or occipital region, it can cause unilateral paralysis, you can lose your head, or you can become numb. Because if a neuron dies, a new one is not formed, neurons do not regenerate, they do not reproduce, they do not divide. Neurons die in places where oxygen decreases and does not arrive, and in the rest they remain half-lived and crippled.
It is sometimes said that the brain is deprived of oxygen when it is easy to be poisoned by carbon monoxide. But when that happens, the brain does not run out of oxygen, the oxygen that reaches the brain is reduced,” said the neurologist.
Galib Asadov recently pointed out that he does not agree with the opinion spread in society about the importance of waiting 72 hours in cases where there is not enough oxygen reaching the brain. He said that in science there is no such time frame.
“No doctor can set that deadline. Because there is no such deadline. The process is that if the ischemic process in the brain returns within 24 hours, we don’t call it a stroke, we call it a transient stroke or a transient stroke.” transient ischemic attack, that is, all brain functions are restored within 24 hours.
If this condition lasts more than 24 hours, it is already considered a stroke. This means that irreversible processes have occurred in the brain, that is, as I mentioned previously, the neurons have died and their recovery is impossible.
It is true that the doctor can tell the patient to wait three or four days and see what happens: if he wakes up from a coma, how the medications work, etc., but there is no specific concept of waiting. hours, there is the concept of waiting 24 hours,” the doctor highlighted.
Aziza Ismayilova
