Frequency of transient ischaemic attacks in strokes: place for a preventive treatment.
Transient ischaemic attack (TIA) represents a neurological deficit during less than 24 hours, without any abnormality on CT scan. This symptom may have 2 risks: it may give place to a severe stroke, and it is not always linked to an ischaemic mechanism. This work rests on a population-based registry existing in Dijon since 1985 with a specific and exhaustive registration. CT scan allows the mechanisms of stroke to be identified: cortical infarct, lacunar infarct, cerebral haemorrhage, and TIA. TIA represent 15% of stroke. Survival rate of 80% is better than other strokes. A TIA may appear before a cerebral infarct in 48% of the cases, a lacunar infarct in 18% of the cases, another TIA in 28% of the cases, and a haematoma in 8% of the cases. Therefore TIA is an important symptom appearing before severe stroke, that may let place to a preventative action.
Service de Neurologie, Hôpital Général, Dijon, France.
M
M
Giroud
P
P
Gras
C
C
Milan
N
N
Chadan
E
E
Essayagh
R
R
Dumas
D000368:Aged; D000369:Aged, 80 and over; D002543:Cerebral Hemorrhage / Q000503:physiopathology; D002544:Cerebral Infarction / Q000503:physiopathology; D002561:Cerebrovascular Disorders / Q000503:physiopathology* / Q000517:prevention & control; D005260:Female; D006801:Humans; D015994:Incidence; D002546:Ischemic Attack, Transient / Q000453:epidemiology*; D008297:Male; D015995:Prevalence; D011379:Prognosis; D012307:Risk Factors