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Published on: October 20, 2017
Recanalisation and outcome cerebral venous thrombosis
D W Schultz1, S M Davis, B M Tress
1The Melbourne Neuroscience Centre, Royal Melbourne Hospital, Victoria, Australia.
Insights
Sinus recanalisation after cerebral venous thrombosis (CVT) does not impact patient outcomes. A 6-month anticoagulant therapy duration is appropriate for CVT patients, even with incomplete sinus recanalisation.
Area of Science:
- Neurology
- Vascular Medicine
- Radiology
Background:
- Cerebral venous thrombosis (CVT) is a rare condition with limited understanding of sinus recanalisation natural history.
- Optimal duration of anticoagulant therapy for CVT remains unclear, despite its acute effectiveness.
Purpose of the Study:
- To investigate the relationship between sinus recanalisation and clinical outcomes in patients with CVT.
- To assess the rate and extent of sinus recanalisation following CVT.
Main Methods:
- Retrospective study of 12 consecutive patients diagnosed with aseptic CVT.
- Follow-up imaging (magnetic resonance scans) performed 5-68 months post-onset to evaluate sinus recanalisation.
- Clinical outcomes, including neurological deficits and recurrent thrombosis, were assessed.
Main Results:
- Incomplete sinus recanalisation was observed in 6 out of 9 assessed patients.
- No patient experienced recurrent thrombosis.
- Only one patient presented with residual neurological deficits.
- Sinus recanalisation status did not correlate with clinical outcomes.
Conclusions:
- Sinus recanalisation after cerebral venous thrombosis does not appear to influence clinical outcomes.
- The standard 6-month anticoagulant therapy recommendation for CVT is considered appropriate, even with incomplete recanalisation.
Abstract:
Little is known of the natural history and rate of sinus recanalisation after cerebral venous thrombosis (CVT). Although acute anticoagulation is effective, the duration of therapy remains speculative. We aimed to determine the relationship between sinus recanalisation and clinical outcome. We studied 12 consecutive patients with aseptic CVT with evidence of sinus thrombosis on initial magnetic resonance imaging, followed up 5-68 months after onset, using 15 repeat magnetic resonance scans in 9 of the patients to assess recanalisation. All patients initially had one or more thrombosed sinuses and were treated with anticoagulants for at least 6 months, including 3 with haemorrhagic infarction. Residual neurological deficits were present in only one patient. No patient had a recurrent thrombosis. Recanalisations was incomplete in 6 of the 9 cases. Sinus recanalisation after cerebral venous thrombosis does not correlate with clinical outcome. Although empirical, the general recommendation of 6 months anticoagulant therapy is appropriate.
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