Decompression sickness

This disease is also called Decompression sickness. In 1973, Smith first described the disease as caisson disease, that is, damage to the inner ear caused by rapid pressure changes in diving high-pressure environments. The occurrence rate of divers during operation is 1%. Generally, the water pressure increases by one atmospheric pressure for every 10 meters of submersion, which is equivalent to the pressure of 17 to 18 Mg. Therefore, you must inhale compressed air or a mixture of inert gas and oxygen when diving to adjust the internal and external pressure of the tympanum and nasal cavity. If the switching pressure is too fast or the eustachian tube is dysfunctional, the disease can occur.