Keywords :
Adult; Aged; Anticoagulants/administration & dosage/adverse effects; Cerebral Hemorrhage/chemically induced/diagnosis; Cohort Studies; Craniotomy/adverse effects/trends; Female; Glioma/diagnosis/surgery; Heparin, Low-Molecular-Weight/administration & dosage/adverse effects; Humans; Male; Middle Aged; Patient Discharge/trends; Post-Exposure Prophylaxis/methods/trends; Retrospective Studies; Time Factors; Venous Thromboembolism/diagnosis/etiology/prevention & control; High-grade glioma; Intracranial hemorrhage; Low-molecular-weight heparin; Thromboprophylaxis; Venous thromboembolism
Abstract :
[en] OBJECTIVE: High-grade gliomas are associated with venous thromboembolism (VTE). This retrospective study with a parallel cohort design investigated influence of continuing prophylactic anticoagulation after discharge on rate of VTE and intracranial hemorrhage (ICH) in patients operated on for high-grade glioma. METHODS: Consecutive adult patients who underwent subtotal or gross total resection for high-grade glioma at a single institution were included. Multivariable logistic regression analysis was used to investigate the association between duration of thromboprophylaxis (dalteparin administered 21 days vs. 0-7 days) and occurrence of VTE and ICH within 21 or 90 days after surgery, corrected for known risk factors. RESULTS: Of 301 included patients, 166 received short-term thromboprophylaxis, and 135 received prolonged thromboprophylaxis. In multivariable analysis, prolonged thromboprophylaxis was not significantly associated with occurrence of VTE within 21 days (3.0% vs. 1.2%; P = 0.24) or 90 days (8.9% vs. 4.8%; P = 0.09) after surgery; however, prolonged prophylaxis was associated with occurrence of ICH (5.9% vs. 0.6%; P = 0.03). Additionally, immobility (P = 0.03) and high body mass index (P = 0.02) were associated with occurrence of VTE. CONCLUSIONS: Prophylactic anticoagulation for 21 days postoperatively was not associated with a decreased rate of VTE compared with thromboprophylaxis until discharge. ICH was more common with prolonged thromboprophylaxis. These results provide insufficient evidence to extend duration of prophylaxis beyond hospitalization. Large-scale randomized prospective studies are needed to clarify safety, efficacy, and optimal timing of postoperative thromboprophylaxis in patients with high-grade glioma.
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