Conclusions the repeated surface anaesthesia with low-concentration Dicaine is safe and effective, and it is a better choice in endoscopic surgery for chronic nasosinusitis and nasal polyp.

结论在一定时间间隔和安全用量范围内，使用低浓度地卡因反复表面麻醉是安全有效的，是慢性鼻窦炎、鼻息肉鼻内窥镜手术的较佳选择。

Symptoms of sinusitis is often cause by the allergic responses such as itching, sneezing, nasal congestion, acute and chronic sinusitis, allergic rhinitis, chronic nasosinusitis and headache.

急慢性鼻炎所引起的鼻敏感症状，如打喷嚏、流鼻水、鼻流脓涕、鼻塞不通、头昏头痛、过敏性鼻炎、慢性鼻窦炎等。