Zhongguo zhen jiu = Chinese acupuncture & moxibustion
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To probe into the mechanism of pneumothorax caused by acupuncture or acupoint injection and the preventive methods. ⋯ The mechanism of pneumothorax caused by acupuncture or acupoint injection is that due to the filiform needle tip or the syringe's needle tip inserting into the lung tissue at the patient's respiration in acupuncture or acupoint injection, the filiform needle tip or the syringe's needle tip lacerates the lung tissue. Air in alveolus goes into the thorax pleura cavity to form pneumothorax. In acupuncture or acupoint injection, the needle tip must not insert into the lung tissue, which is a key for prevention of pneumothorax.