The infusion of air with a hangnail needle does not have to be too nervous, can first take the head down and high left lateral position, so that the gas can not enter the right ventricle and pulmonary artery in large quantities, and at the same time give oxygen, the conditions are better can also be into the hyperbaric oxygen chamber for oxygen inhalation. For a 50kg body weight woman, the amount of air embolism that kills is around 100mL, while less than 10mL of air does not cause significant clinical symptoms and has no significant health effects, and is quickly absorbed by the body. To prevent this from happening again, it is important to keep an eye on the tube during infusion.