title: Delay in the diagnosis of cerebral vein and dural sinus thrombosis: influence on outcome.
abstract: OBJECTIVE
  Diagnostic delay of cerebral vein and dural sinus thrombosis may have an impact on outcome.
  
  
  METHODS
  In the International Study on Cerebral Vein and Dural Sinus Thrombosis (ISCVT) cohort (624 patients with cerebral vein and dural sinus thrombosis), we analyzed the predictors and the impact on outcome of diagnostic delay. Primary outcome was a modified Rankin Scale score >2 at the end of follow-up. Secondary outcomes were modified Rankin Scale score 0 to 1 at the end of follow-up, death, and visual deficits (visual acuity or visual field).
  
  
  RESULTS
  Median delay was 7 days (interquartile range, 3 to 16). Patients with disturbance of consciousness (P<0.001) and of mental status (P=0.042), seizure (<0.001), and with parenchymal lesions on admission CT/MR (P<0.001) were diagnosed earlier, whereas men (P=0.01) and those with isolated intracranial hypertension syndrome (P=0.04) were diagnosed later. Between patients diagnosed earlier and later than the median delay, no statistically significant differences were found in the primary (P=0.33) and in secondary outcomes: modified Rankin Scale score 0 to 1 (P=0.86) or deaths (P=0.53). Persistent visual deficits were more frequent in patients diagnosed later (P=0.05). In patients with isolated intracranial hypertension syndrome, modified Rankin Scale score >2 at the end of follow-up was more frequent in patients diagnosed later (P=0.02).
  
  
  CONCLUSIONS
  Diagnostic delay was considerable in this cohort and was associated with an increased risk of visual deficit. In patients with isolated intracranial hypertension syndrome, diagnostic delay was also associated with death or dependency.
authors.forename: José M
authors.initials: JM
authors.lastname: Ferro
authors.forename: Patrícia
authors.initials: P
authors.lastname: Canhão
authors.forename: Jan
authors.initials: J
authors.lastname: Stam
authors.forename: Marie-Germaine
authors.initials: MG
authors.lastname: Bousser
authors.forename: Fernando
authors.initials: F
authors.lastname: Barinagarrementeria
authors.forename: Ayrton
authors.initials: A
authors.lastname: Massaro
authors.forename: Xavier
authors.initials: X
authors.lastname: Ducrocq
authors.forename: Scott E
authors.initials: SE
authors.lastname: Kasner
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002550:Cerebral Veins; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D019586:Intracranial Hypertension / Q000150:complications / Q000175:diagnosis* / Q000401:mortality; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D012851:Sinus Thrombosis, Intracranial / Q000150:complications / Q000175:diagnosis* / Q000401:mortality; D013997:Time Factors; D014786:Vision Disorders / Q000175:diagnosis / Q000209:etiology