[Clinical analysis of head and neck malignant tumor patients with postoperative venous thromboembolism].

To investigate the incidence, risk factors, prevention and treatment of venous thromboembolism（VTE） after head and neck malignant tumor surgery. From February 2014 to February 2020, a total of 889 patients with head and neck malignant tumor treated in the Department of Otolaryngology Head and Neck Surgery of the Third Xiangya Hospital of Central South University were selected as the research objects. 16 patients with VTE were selected as the observation group, and 30 patients were randomly selected as the control group from 873 patients without VTE. The related evaluation indexes were analyzed by univariate and multivariate logistic regression. ①VTE occurred in 16 cases of 889 patients with head and neck malignancy, and the incidence of VET in head and neck malignant tumor patients was 1.80%. ② Univariate analysis showed that postoperative VTE was related to gender, age, BMI, preoperative PICC, operation time and bed rest time. Multivariate logistic regression analysis indicated that age≥60 years old（=0.087, 95%: 0.012-0.643）, preoperative PICC（=0.133, 95% 0.021-0.856） and operation time≥3 h（0.119, 95% 0.016-0.889） was an independent risk factor of VTE after head and neck malignant tumor operation （<0.05）. VTE is a serious complication after operation for head and neck malignant tumor. The risk factors of postoperative VTE include age≥60 years, preoperative PICC and operation time≥3 h. Early prevention and timely treatment are the key to reduce postoperative VTE mortality.