Abstract:Objective To analyze the influencing factors and preventive measures for recurrent laryngeal nerve (RLN) injury in thyroid cancer surgery.Methods Taking 420 patients undergoing thyroid cancer surgery in our hospital from Jan 2018 to Dec 2019 as the research objects, logistic regression was used to analyze the relationships between the pathological type of thyroid cancer, TNM staging, surgical method, tumor location, and nerve exposure, and their impacts on the occurrence rate of RLN injury. And corresponding preventive measures were established.Results Among 420 patients with thyroid cancer, 25 patients developed RLN injury after operation with an incidence rate of 5.95%. The RLN injury was permanent in 10 cases (2.38%) and temporary in 15 (3.57%). Postoperative follow-up for 1 year revealed no recovery of RLN function in the 10 cases with permanent injury and complete recovery of vocal cord movement in the 15 with temporary injury within 6 months. Univariate analysis showed that the incidence of RLN injury was associated with tumor location, operation method, and times of operation (all P<0.05). Multivariate logical regression analysis indicated that tumor location, operation method, and times of operation were independent risk factors for RLN injury (all P<0.05).Conclusions Tumor location, operation method, and times of operation are independent risk factors for RLN injury in thyroid cancer surgery. Familiarity with the anatomy of RLN and adequate exposure of nerves are the preventive measures to reduce the occurrence of RLN injury.