What is decompression sickness

summary

Decompression sickness is a series of diseases that may be caused by entering from high pressure environment and low pressure environment. For example, when diving into deep water, the pressure changes, which may lead to tinnitus or severe pain inside the ear. Here's what decompression sickness is.

What is decompression sickness

First, decompression sickness is a systemic disease caused by improper decompression after high-pressure operation, the dissolved gas in the body exceeds the supersaturation limit, and bubbles are formed inside and outside the blood vessels and tissues. Acute decompression sickness occurs in a short time after decompression or during decompression. It mainly occurs in femur, humerus and tibia, and the slowly evolving ischemic bone or joint damage is decompressive osteonecrosis.

Second: those who have diving operation, caisson operation, special high altitude flight history, and do not comply with decompression regulations, and have symptoms and signs of nitrogen bubble compression or vascular embolism should be considered as decompression sickness.

Third: acute decompression sickness in China is divided into three grades: mild, moderate and severe: mild skin symptoms, such as pruritus, papules, marbling, subcutaneous hemorrhage, edema, etc.; moderate mainly occurs in the major joints of the extremities and the muscle and joint pain nearby; severe all appear nervous system, circulatory system, respiratory system and digestive system disorders.

matters needing attention

When diving from the bottom to the surface, the air pressure will also change a lot, a little weightless. This kind of situation is a bit similar to that when you come from a place with high altitude to a place with low altitude, it is easy to cause oxygen intoxication. Therefore, it is a popular science for everyone to know what decompression sickness is.