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  • Title: Spinal subdural haematoma: how relevant is the INR?
    Author: Miller DR, Ray A, Hourihan MD.
    Journal: Spinal Cord; 2004 Aug; 42(8):477-80. PubMed ID: 14968105.
    Abstract:
    STUDY DESIGN: Case report. OBJECTIVE: To report a rare cause of spinal cord compression. SETTING: University Hospital, Wales, UK. CASE REPORT: A 67-year-old gentleman on oral anticoagulation for atrial fibrillation presented with a 4-h history of progressive loss of sensation and weakness in both legs; there was no history of trauma. On examination, he had a flaccid paraplegia with altered sensation in the L1,2,3 dermatomes and complete anaesthesia in the L4,5 distribution. Knee and ankle jerk reflexes were absent, plantars were equivocal and anal sphincter tone was reduced. The patient's international normalized ratio (INR) was 4.1. An MR scan showed an extensive intradural haematoma compressing the cauda equina. The anticoagulation was reversed and an urgent T12-L2 laminectomy was performed; findings were a circumferential haematoma at L1 extending in the anterior canal between T10 and L3. The patient had an uneventful postoperative course generally, but at 1 week there was no neurological recovery. CONCLUSION: This case highlights that anticoagulation even when well controlled is not without risk. This is particularly of concern as the number of patients receiving long-term anticoagulation therapy has doubled between 1993 and 1998.
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