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Time to resumption of antithrombotic therapy in chronic subdural haematoma: a systematic review and meta-analysis

  • On Behalf Of The ICENI Clinical Practice Guidelines For Chronic Subdural Haematoma Consortia
  • University of Cambridge
  • Queen Mary University of London
  • Mid and South Essex NHS Foundation Trust
  • King's College London
  • The University of Buckingham
  • University of Liverpool
  • Imperial College London
  • Royal College of Surgeons in Ireland
  • University of Manchester
  • South West Neurosurgical Centre
  • Sheffield Teaching Hospitals NHS Foundation Trust
  • Department of Neurosurgery

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Chronic subdural haematoma (CSDH) is common in the elderly, with approximately 40% of patients with CSDH taking anti-thrombotic medications. Surgery necessitates temporary cessation. The optimal time of postoperative antithrombotic resumption is not known, with the risk of recurrence balanced against the risk of thrombosis. 

Methods: A systematic review was carried out (registration number:CRD42023427275). Medline and EMBASE databases were searched. The primary outcome of this study was recurrence. Late and early resumption was defined by study authors - a final definition was not possible given the heterogeneity amongst papers. 

Results: 7 studies were included in the final analysis (3,195 patients total). Generally, studies reported higher risk of thromboembolic events in patients in late resumption groups (n = 4). On meta-analysis, there was no increased risk of recurrence in the early vs late groups (OR 0.61, 95% CI [0.016; 2.40], I2 = 0%, p = 0.26). Most studies reported that early resumption was not associated with increased adverse events. Definitions of early and late varied by study (earliest range <3 days to <30 days). 

Conclusions: We found no significant difference in rates of recurrence, or thromboembolic events in those receiving early or late resumption of antithrombotic medication. Prospective studies with consensus definitions are required to inform clinical decision making and guidelines.

Original languageEnglish
JournalBritish Journal of Neurosurgery
Early online date16 Jul 2025
DOIs
Publication statusE-pub ahead of print - 16 Jul 2025

ASJC Scopus subject areas

  • Surgery
  • Neurology (clinical)

Keywords

  • anticoagulation
  • chronic subdural haematoma
  • neurosurgery

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