探讨CT引导下肺癌氩氦刀冷冻治疗中气胸的预防及对策。

对457例肺癌行CT引导下氩氦刀冷冻消融术，术中密切观察，分析气胸发生的原因，并总结有效的预防措施及气胸处理对策。

患者均顺利完成手术，无术中死亡，并发气胸71例，发生率15.54%（71/457）；37例气胸范围>20%，给予反向体位法抽气引流后35例一次治愈，有效率94.59%（35/37）；术后采用反向体位法可预防气胸发生。

CT引导下氩氦刀冷冻治疗肺癌采用合理的术式时气胸发生率较低且轻微，反向体位法防治气胸效果理想。

To observe the prevention and countermeasures of pneumothorax during argon-helium knife cryosurgery under the guide of CT in treatment of lung cancer.

A total of 457 patients were treated with argon-helium knife cryosurgery under the guide of CT, and observed closely during the surgery. The causes of pneumothorax were analyzed, and the effective prevention and countermeasures were summerized.

All patients completed the operation smoothly. No case died. There were 71 cases with pneumothorax, incidence rate of 15.54% (71/457). Thirty-seven cases whose scope of pneumothorax expanded to more than 20% were given to reverse inverse air exhaust. Thirty-five cases were cured with an effective rate of 94.59% (35/37). Postoperative use of inverse air exhaust could prevent the occurrence of pneumothorax.

The argon-helium knife cryosurgery is an effective method with mild rate of pneumothorax, which could recover soon after inverse air exhaust.