Unruptured intracranial aneurysms: an assessment of the annual risk of rupture based on epidemiological and clinical data.

Abstract:

:From autopsy and neuroradiological studies a maximum prevalence of unruptured intracranial aneurysms (UA) of 0.5% in the general population is revealed. Studies concerning the incidence of aneurysmal subarachnoid haemorrhage (SAH) revealed 10 cases per 100,000 inhabitants per year. From these epidemiological parameters a minimum annual risk of 2% of rupture of an UA is calculated. It is in accordance with clinical studies, which also demonstrated an annual risk of UA rupture of at least 2%. No critical size of the UA predisposing to rupture has been found. Operation on diagnosed UA is recommended because of the serious prognosis after aneurysmal SAH (morbidity 20%-25% and mortality 50%-60%) and because the morbidity (4%) and the mortality (0%) after operative treatment of UA are very low.

journal_name

Br J Neurosurg

authors

Rosenørn J,Eskesen V,Schmidt K

doi

10.3109/02688698809001008

subject

Has Abstract

pub_date

1988-01-01 00:00:00

pages

369-77

issue

3

eissn

0268-8697

issn

1360-046X

journal_volume

2

pub_type

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