What causes anoxia

summary

The tissues in the body can not get enough oxygen or can not make full use of oxygen for normal metabolic activities, which is hypoxia. Brain hypoxia will seriously threaten the safety of life. So, what are the causes of hypoxia. Now let's answer it.

What causes anoxia

First: hypoxemia hypoxia: for example, the air in high mountains is thin and oxygen content is low, making it difficult to breathe, respiratory tract obstruction, respiratory center inhibition and other respiratory system diseases or some congenital heart disease and other diseases can reduce the oxygen content in arterial blood, thus causing hypoxia.

Second: circulatory hypoxia: such as heart failure, shock, local ischemia or blood stasis, due to the influence of blood circulation obstacles, the speed of blood flow slows down, so as to reduce the blood flow through the artery in unit time, resulting in hypoxia.

Third: tissue hypoxia: for example, cyanide poisoning, lack of vitamins, etc. may cause hypoxia, due to tissue oxygen barrier, can not make full use of oxygen. Blood hypoxia: such as carbon monoxide poisoning, nitrite poisoning, making the ability of blood with oxygen decreased, leading to the occurrence of hypoxia.

matters needing attention

Whether anoxia occurs or not is also related to external temperature, body function and central nervous system.