In this condition, the pressure of pus and the inflammation of the eardrum may destroy a small area of drum tissue and create a hole through which the pus can drain to the outside.
在这种情况下，压力的脓和炎症的鼓膜可能摧毁一个小面积的鼓组织和创造一个洞，通过它可以脓流失向外界。
2
Conclusion Thoroughly cleaning pathological tissue, keeping drain, regarding the care of the operated cavity after operation are important measures to improve dry ear rate after radical mastoidectomy.
结论术中彻底清除病变，术腔引流通畅，重视术后术腔换药是提高乳突手术后干耳率的重要环节。
3
The anti-extravasation surgical portal plug allows a surgeon to drain excess fluids from the soft tissue surrounding the surgical field during arthroscopic surgical procedures.