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Neurosurg Rev. 2004 Oct;27(4):263-6. Epub 2004 May 18.

Demographics and prevalent risk factors of chronic subdural haematoma: results of a large single-center cohort study.

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Department of Neurosurgery, University Hospital Basle, Spitalstrasse 21, Basel, Switzerland.


Chronic subdural haematoma (CSDH) is a typical disease in elderly patients and encountered frequently in neurosurgical practice. With an increasing number of elderly people in the general population, there is a need to investigate risk factors (age, falls, anticoagulant or antithrombotic therapy) which could be pertinent to the development of this disease. We reviewed 354 patients undergoing surgery for CSDH over a period of 7 years (1996-2002), the occurrence being equally distributed over these years. CSDH occurred more often in elderly (> or = 65 years) than in younger people (69 vs 31%), and in men than in women (64 vs 36%). Falls were reported in 77% of patients. There was a trend towards a higher risk of falls in the elderly. Antithrombotic or anticoagulant therapy was present in 41% of patients, 32% of them having had falls. Overall postoperative mortality was 0% and overall recurrence rate 13.6%. CSDH in the elderly population, especially in men, is frequently associated with falls and anticoagulation or antithrombotic therapy. The indication for these medications, especially in elderly patients at risk for falls, should be carefully evaluated and controlled.

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