Early incidence of deep venous thrombosis and its risk factors after knee arthroscopic surgery in patients with anticoagulant and non-anticoagulant

Abstract

Purpose: To investigated the early incidence of deep venous thrombosis (DVT) and its risk factors after knee arthroscopic surgery in patients with anticoagulant and non-anticoagulant.Methods: 272 patients were reviewed who have undergone knee arthroscopic surgery in our hospital from January 2018 to October 2019. Color doppler ultrasound was performed for every patient at 24h preoperatively and three days after operation. On the first day after surgery, low molecular weight heparin (LMWH) was randomly administered to some patients and not in others. The following factors were recorded: gender, age, body mass index (BMI), preoperative platelet and D-dimer level, D-dimer level three days after surgery, anesthetic technique, tourniquet time, whether to use LMWH after operation, and type of surgical procedures. Chi-square test or Student t test was used to preliminarily screen out suspected risk factors. Then, multiple logistic regression analysis was utilized to further determine the risk factors of DVT after knee arthroscopic surgery.Results: The incidence of DVT in the postoperative anticoagulant group was 7.5%, and 7.4% in the non-anticoagulant group. An increased incidence was found among higher D-dimer level postoperatively. There was no significant difference in the incidence of DVT between use of LMWH and non-use of LMWH in three days after surgery.Conclusion: The early incidence of DVT in the group of patients without LMWH was 7.4%. The incidence of DVT in patients with knee arthroscopy surgery could not be reduced by using LMWH within three days, and high D-dimer level was a risk factor for DVT after knee arthroscopic surgery.