Long-term brain hypoxia will cause irreversible damage and even brain death. Regular "
Lack of oxygen in the body will do harm to health, even if it is not directly life-threatening.
Like food and water, oxygen is the key substance of human metabolism and life movement.
First, nutrients must be oxidized to produce and release chemical energy.
Hypoxia refers to hypoxia, that is, hypoxia or hypoxia in the air. nature
It provides basic living conditions for everyone. However, if you are particularly short of oxygen,
The environment, or although there is no oxygen-deficient gas in the environment, it can't get enough oxygen for its own reasons.
Oxygen, or inhaled oxygen, can not be fully utilized, and the human body will have functions, metabolism and morphology.
A change of state. This state is collectively referred to as hypoxia or hypoxia. Therefore, medical scientists put hypoxia
The reasons are divided into environmental hypoxia, pathological hypoxia, physiological hypoxia and exercise hypoxia.
General manifestations of hypoxia
Hypoxia is generally manifested as dizziness, headache, tinnitus, dizziness and weakness of limbs.
Have a plenty of nausea and vomiting, shallow breathing and weak heartbeat. With the aggravation of hypoxia,
Will gradually appear fuzzy consciousness, the whole body skin, lips, nails blue, blood pressure drop, pupil narrowing.
Scattered, coma, and finally died of dyspnea, cardiac arrest, hypoxia and suffocation.
Normal oxygen metabolism begins with ventilation and gas exchange in the respiratory system. Respiratory process
Obstacles in any link will cause insufficient gas exchange. At this time, the human head
First of all, it will make a compensatory protective response. As a result of nerve reflex or direct action of blood gas,
You can increase the breathing depth and then speed up the breathing frequency. If the compensatory response is insufficient
Hypoxia will appear when the body needs it. As a result, the arterial oxygen partial pressure is lower than the normal level,
At the same time, the partial pressure of carbon dioxide caused by carbon dioxide accumulation is higher than the normal level. This phenomenon
It is always called respiratory insufficiency. If the arterial oxygen partial pressure is lower than 60mmHg, or the carbon dioxide partial pressure
When the pressure is higher than 50rnmHg, it is called respiratory failure.
Harm of hypoxia
No matter what causes hypoxia, it will change the function and metabolic state of the body. God
The menstrual system is most sensitive to hypoxia. Even mild hypoxia can cause mental and visual problems.
Dysfunction. The brain is the organ with the greatest demand for oxygen among human organs. The weight of the brain only accounts for
2% ~ 3% of body weight, and the oxygen consumption of brain accounts for 20% ~ 30% of the total oxygen consumption of human body. heart
15% of the output blood is supplied to the brain. However, the brain tissue itself has almost no energy supply.
Material reserves, all in accordance with the * oxygen in the fresh blood brought by brain circulation to maintain survival and hold.
Perform normal physiological functions. Therefore, brain tissue has the lowest tolerance to hypoxia (ischemia).
Chronic mild hypoxia in the brain can lead to drowsiness, distraction and memory loss.
Then there will be disturbance of consciousness, convulsion, lethargy or coma, and even death. If the blood supply to the brain
When the oxygen is completely cut off, you will lose consciousness within 8 ~ 15 seconds, which is irreversible within 6 ~ 10 minutes.
Damage.
The heart is also an organ with high oxygen consumption, high metabolic rate and low oxygen reserve, so for hypoxia,
Also very sensitive and vulnerable. Severe hypoxia and persistent hypoxia can decrease myocardial contractility.
The heart rate drops, slows down, and the blood output of the heart decreases, forming a vicious circle and presenting symptoms of hypoxia.
Even myocardial cell degeneration and necrosis. Persistent chronic hypoxia is prone to heart failure.
Severe hypoxia directly inhibits the respiratory center, weakens breathing, or appears tidal breathing, or even
Until breathing stops.
How to avoid and correct hypoxia
The severity of the consequences of hypoxia is closely related to the duration of hypoxia, which should be corrected in time.
Hypoxia can avoid or reduce the damage of tissues and organs and quickly restore the metabolic function of the body. such as
If hypoxia is not corrected for a long time, the damage of cells will be difficult to recover and will lead to organ diseases.
So high-intensity mental workers, white people who stay in air-conditioned rooms with low oxygen content for a long time.
Patients before and after operation, tourists to plateau and other places, elderly people with insomnia and pregnant women.
Mothers should pay attention to replenish oxygen to their brains. In addition to direct oxygen inhalation, external oxygen supply also includes
Aerobic exercise, such as walking, jogging, deep breathing, improving the oxygen environment, etc.