关键词: 下肢深静脉血栓形成, 髋部骨折, 高龄老年

Abstract: Objective To study the risk factors of deep venous thrombosis (DVT) of lower extremity in elderly patients with hip fracture. Methods A retrospective study was conducted on 687 elderly patients over 80 years with hip fracture admitted to the Orthopaedic Trauma ward for the elderly of Beijing Jishuitan Hospital from March 2018 to February 2019. Lower extremity DVT was initially screened by doppler ultrasound, and patients with suspected or positive lower extremity DVT were diagnosed by venography. Univariate and multivariate stepwise Logistic regression analysis was performed to explore the independent risk factors of DVT in lower extremities before surgery. Results The incidence of preoperative lower limb DVT was 12.4% (85/687). Independent predictors of preoperative DVT identified by multivariate stepwise Logistic regression analyses were time from injury to admission, activated partial thromboplastin time (APTT) and intertrochanteric fracture (P<0.05). Conclusion The incidence of DVT in lower extremity is high in elderly patients with hip fracture. Patients with intertrochanteric fractures, delayed admission after fracture, and shortened APTT have an increased incidence of preoperative lower limb DVT. We should take preventive measures for patients with these risk factors to reduce the incidence of preoperative DVT.

Key words: lower extremity deep vein thrombosis, hip fracture, elderly patients