A prospective controlled double-blind trial of great auricular nerve preservation at parotidectomy

摘要: Abstract Background Earlier reports of the advantages preservating posterior branches great auricular nerve (GAN) at parotidectomy were conflicting. This prospective study was aimed clarifying controversy. Methods Eighty-one patients in a university otolaryngology department recruited. The preserved whenever initial dissection showed that tumor clearance would not be compromised. Touch-pressure sensation monitored predefined territories supplied by GAN using Semmes-Weinstein aesthesiometer, preoperatively and postoperatively. Minimal pressure thresholds obtained compared between two groups. Results Preservation achievable 69% patients; sensory deficit transient. With divided, measurable depression occurred up to 2 years after surgery. difference is statistically significant. Patients’ subjective assessment numbness also conformed these trends. Additional time taken for preservation about 10 minutes. Conclusions should always if